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Expired Canadian patentCanada

Power stacking apparatus

CA 2083031 C · Owner: Holbrook, Russell W. · Inventors: Holbrook, Russell W.

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 power stacker for collecting delivered articles such as envelopes from a mailing machine is comprised of a support housing having a deck fixably mounted along the housing. A registration wall is fixably mounted to the housing and extending generally perpendicular relative to the deck. A stack wall is slidably mounted to the housing at one end of the deck and has a reclined surface extended generally upwardly from the deck, the stack wall being slidably mounted to the housing such that the stack wall can be horizontally displaced relative to the deck. Support rods are provided for providing article support between the deck and displaced stack wall as well as between the registration and …

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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

  • Filed November 16, 1992 and granted January 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 16, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 16, 1992
GrantedJanuary 14, 1997
Term endedNovember 16, 2012
Patent numberCA 2083031 C
Classification (IPC)B65H29/22 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedNov 16, 1992Patent grantedJan 14, 1997Term endedNov 16, 2012

Sources & verification

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