diff --git a/source/app/controllers/utils.py b/source/app/controllers/utils.py
index 6ffef47..1a15abe 100644
--- a/source/app/controllers/utils.py
+++ b/source/app/controllers/utils.py
@@ -18,6 +18,7 @@
 
 import base64
 import collections
+import datetime
 import math
 import smtplib
 
@@ -28,11 +29,13 @@ from email import encoders
 from email.utils import formatdate
 from io import BytesIO
 
+import lxml.etree as ET
 import requests
+
 from cryptography.fernet import Fernet
 from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives import hashes
-import lxml.etree as ET
+from dateutil import parser
 
 
 TIMEOUT = 10
@@ -272,3 +275,9 @@ def get_url(url):
     r = requests.get(url).text
     return r
 
+
+def parse_date(value, next_day=False):
+    d = parser.parse(value)
+    if next_day:
+        return d + datetime.timedelta(days=1)
+    return d
diff --git a/source/app/models/db.py b/source/app/models/db.py
index a3de267..ca73fd0 100644
--- a/source/app/models/db.py
+++ b/source/app/models/db.py
@@ -384,8 +384,10 @@ class StorageEngine(object):
     def get_tickets(self, values):
         return main.Tickets.get_by(values)
 
-    def get_invoices(self, values):
-        return main.Facturas.get_(values)
+    def get_invoices(self, filters):
+        if filters.get('by', ''):
+            return main.Facturas.get_by(filters)
+        return main.Facturas.get_(filters)
 
     def get_preinvoices(self, values):
         return main.PreFacturas.get_(values)
diff --git a/source/app/models/main.py b/source/app/models/main.py
index 069c3d3..01d0236 100644
--- a/source/app/models/main.py
+++ b/source/app/models/main.py
@@ -3719,6 +3719,60 @@ class Facturas(BaseModel):
         obj.save()
         return data
 
+    def _get_filters(self, values):
+        if 'start' in values:
+            filters = Facturas.fecha.between(
+                utils.parse_date(values['start']),
+                utils.parse_date(values['end'], True)
+            )
+        else:
+            if values['year'] == '-1':
+                fy = (Facturas.fecha.year > 0)
+            else:
+                fy = (Facturas.fecha.year == int(values['year']))
+            if values['month'] == '-1':
+                fm = (Facturas.fecha.month > 0)
+            else:
+                fm = (Facturas.fecha.month == int(values['month']))
+            filters = (fy & fm)
+
+        if 'client' in values:
+            filters &= (Socios.nombre==values['client'])
+
+        return filters
+
+    def _get_by_notes(self, filters):
+        notes = filters['notes']
+        filters = self._get_filters(self, filters)
+        filters &= (Facturas.notas.contains(notes))
+
+        rows = tuple(Facturas.select(
+                Facturas.id,
+                Facturas.serie,
+                Facturas.folio,
+                Facturas.uuid,
+                Facturas.fecha,
+                Facturas.tipo_comprobante,
+                Facturas.estatus,
+                case(Facturas.pagada, (
+                    (True, 'Si'),
+                    (False, 'No'),
+                )).alias('paid'),
+                Facturas.total,
+                Facturas.moneda.alias('currency'),
+                Facturas.total_mn,
+                Socios.nombre.alias('cliente'))
+            .where(filters)
+            .join(Socios)
+            .switch(Facturas).dicts()
+            )
+
+        return {'ok': True, 'rows': rows}
+
+    @classmethod
+    def get_by(cls, filters):
+        return getattr(cls, f"_get_by_{filters['by']}")(cls, filters)
+
     @classmethod
     def filter_years(cls):
         data = [{'id': -1, 'value': 'Todos'}]
@@ -4387,7 +4441,7 @@ class Facturas(BaseModel):
             precio_final = valor_unitario - descuento
             importe = round(cantidad * precio_final, DECIMALES)
 
-            if use_packing:
+            if use_packing and p.cantidad_empaque:
                 product['empaques'] = utils.round_up(
                     cantidad / float(p.cantidad_empaque))
 
diff --git a/source/static/js/controller/invoices.js b/source/static/js/controller/invoices.js
index bb7c799..6ab7636 100644
--- a/source/static/js/controller/invoices.js
+++ b/source/static/js/controller/invoices.js
@@ -82,6 +82,9 @@ var invoices_controllers = {
         $$('txt_folio_custom').attachEvent('onKeyPress', txt_folio_custom_key_press);
         $$('txt_folio_custom').attachEvent('onBlur', txt_folio_custom_lost_focus);
 
+        $$('search_by').attachEvent('onKeyPress', search_by_key_press)
+        $$('search_by').attachEvent('onItemClick', search_by_click)
+
         webix.extend($$('grid_invoices'), webix.ProgressBar)
 
         init_config_invoices()
@@ -2267,3 +2270,53 @@ function txt_folio_custom_lost_focus(prev){
         validate_folio_exists(prev.getValue())
     }
 }
+
+
+function get_filters_invoices(){
+    var filters = $$('filter_dates').getValue()
+    filters['year'] = $$('filter_year').getValue()
+    filters['month'] = $$('filter_month').getValue()
+    filters['client'] = $$('grid_invoices').getFilter('cliente').value
+    return filters
+}
+
+
+function search_by(value){
+    var filters = get_filters_invoices()
+    filters['by'] = 'notes'
+    filters['notes'] = value
+
+
+    var grid = $$('grid_invoices')
+    grid.showProgress({type: 'icon'})
+
+    webix.ajax().get('/invoices', filters, {
+        error: function(text, data, xhr) {
+            msg_error('Error al consultar')
+        },
+        success: function(text, data, xhr) {
+            var values = data.json();
+            grid.clearAll();
+            if (values.ok){
+                grid.parse(values.rows, 'json');
+            };
+        }
+    });
+
+}
+
+
+function search_by_key_press(code, e){
+    var value = this.getValue().trim()
+    if(code == 13 && value.length > 3){
+        search_by(value)
+    }
+}
+
+
+function search_by_click(){
+    var value = this.getValue().trim()
+    if(value.length > 3){
+        search_by(value)
+    }
+}
diff --git a/source/static/js/ui/invoices.js b/source/static/js/ui/invoices.js
index 9357a55..0aa72c1 100644
--- a/source/static/js/ui/invoices.js
+++ b/source/static/js/ui/invoices.js
@@ -234,6 +234,9 @@ var toolbar_invoices_filter = [
         labelWidth: 50, width: 200, options: months},
     {view: 'daterangepicker', id: 'filter_dates', label: 'Fechas',
         labelAlign: 'right', width: 300},
+    {},
+    {view: 'search', id: 'search_by', name: 'search_by', width: 200,
+        placeholder: 'Captura al menos cuatro letras'},
 ]