Modular sleeping bag
CA 2198233 C · Owner: Thier, Howard F. · Inventors: Thier, Howard F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sleeping bag (10) having a plurality of superposed bags (14,16) one within , the other, the number of superposed bags depending on the degree of thermal protection desired. Besides having an opening (18) to expose a user's face each bag has an open side, closable by a slide fastener (22) to facilitate , entering or exiting the sleeping bag. Disposed along and proximate both sides of the slide fastener of each bag are two rows of non-slide-type fasteners (34) having top and bottom engagement surfaces secured to the outer and inner surfaces of each bag. The non-slide-type fasteners can be used either for selectively attaching an inner bag (16) to an outer bag (14) or for closing the …
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
- Filed August 23, 1995 and granted January 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 23, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 23, 2017.
- 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.