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Expired Canadian patentCanada

Stuffed sealed envelope assembly

CA 1086272 A · Owner: Wallace Business Forms, Inc. · Inventors: Steidinger, Donald 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 series of connected, stuffed sealed envelope assemblies, i.e. "mailers" and method of making wherein the insert plies are each rectangular and along one edge thereof having an integral attaching portion which is secured to either the envelope front or back at a location inward of the adjacent control margin.

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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 September 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 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.
FiledMarch 31, 1978
GrantedSeptember 23, 1980
Term endedSeptember 23, 1997
Patent numberCA 1086272 A
Classification (IPC)B65D27/10 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 31, 1978Patent grantedSep 23, 1980Term endedSep 23, 1997

Sources & verification

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