A device and method are described for creating a vacuum in bags (20), particularly those for holding food products, in which the device comprises an outer tube (10) that is inserted into the bag (20) from above and an inner tube (11) that can slide axially inside the tube (10) to move from a...http://www.google.com.au/patents/US5711136?utm_source=gb-gplus-sharePatent US5711136 - Device and method for creating a vacuum in bags
