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Expired Canadian patentCanada

Feeding gate

CA 1310233 C · Owner: Spinder, Pieter · Inventors: Spinder, Pieter

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 feeding gate of the type comprising tiltable closing pipes and a rectilinearly movable operating member in order to latch and unlatch said closing pipes has, according to the invention been, made centrally latchable and unlatchable in that the operating member, at least L-shaped in cross-section has a recess in the, horizontal leg for centrally closing and the vertical leg has an obliquelu rising edge for centrally unlatching the closing pipes. .

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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 November 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 13, 1988
GrantedNovember 17, 1992
Term endedNovember 17, 2009
Patent numberCA 1310233 C
Classification (IPC)A01K1/06

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedDec 13, 1988Patent grantedNov 17, 1992Term endedNov 17, 2009

Sources & verification

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