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Expired Canadian patentCanada

Disposable film package and holder for use therewith

CA 1267555 C · Owner: Hoffman, Robert H. Jr. · Inventors: Hoffman, Robert H. Jr.

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 disposable package for cut photographic film and a holder adopted for use therewith. The film package provides a light excluding envelope into which is inserted a planar carrier bearing a sheet of photographic film affixed thereto by an adhesive backed opaque mask element. One end of the carrier has an elongated tab which, together with the end of the envelope, extends substantially outside the holder when the film package is fully inserted therein and which may be, grasped along with the envelope to facilitate withdrawal of the package from the holder. The open end of the envelope is rendered light tight when the carrier is fully inserted therein by the engagement of the edges of 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 April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 5, 1986
GrantedApril 10, 1990
Term endedApril 10, 2007
Patent numberCA 1267555 C
Classification (IPC)G03B17/26 +1 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedSep 5, 1986Patent grantedApril 10, 1990Term endedApril 10, 2007

Sources & verification

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