Shoe with detachable upper
CA 1069300 A · Owner: Lawrence, Peter A. · Inventors: Lawrence, Peter A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure The lower stringer of a slide fastener means is attached to an upstanding side wall of a sole, which side wall extends around the perimeter of the sole; the complementary upper stringer is attached to the lower edge portion of the upper which lower edge portion extends around the perimeter of said upper. With the shoe disassembled, the tape of the upper stringer lies adjacent of the outer surface of the upper and carries coupler means directed upwardly. To assemble the shoe the upper stringer tape is folded outwardly and downwardly over on itself to form an upwardly directed bight and thus dependently locating the coupler means of the upper stringer directly above …
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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.