Bag roll
CA 1297453 C · Owner: Case, Manson Drew · Inventors: Case, Manson Drew; Wilfong, Harry Baker, Jr.; Hoffmeyer, William Conrad
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roll of flexible plastic film bags formed of a continuous strip of bags with transverse severance lines between the individual bags. The bags dispense in a forward direction from the roll with each following bag adhesively tacked to the roll with a resistance to release slightly greater than the resistance to release of the severance line for a stabilization of the roll as the leading bags are severed therefrom. The tack securing of each following bag is provided by the application of an adhesive to the inner face panel of each bag adjacent the mouth end thereof as the roll is being formed.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.