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Expired Canadian patentCanada

Combined sheet compressor and transfer device for attachment to spaced prongs of a file folder fastener

CA 1320092 C · Owner: Corey, Thomas J. · Inventors: Corey, Thomas J.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A combined sheet compressor and transfer device for attachment to spaced prongs of a file folder fastener including a plate-like cross member for receiving the prongs of the file folder fastener and bearing against a stack of sheets to thereby act as a compressor, a pair of substantially parallel flexible elongated legs of substantially rectangular cross section extending from the plate-like cross member and flexible tubular, members at the outer ends of the legs of a slightly smaller internal diameter than the width of the prongs so as to be distorted at their outer ends when mounted on the prongs to thus provide a relatively smooth junction therewith at their outer ends to facilitate the …

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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 July 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 2, 1988
GrantedJuly 13, 1993
Term endedJuly 13, 2010
Patent numberCA 1320092 C
Classification (IPC)B42F13/42 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 2, 1988Patent grantedJuly 13, 1993Term endedJuly 13, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.