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Expired Canadian patentCanada

Safety lock

CA 1283790 C · Owner: Waite, Ronald · Inventors: Waite, Ronald

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 locking device comprising a hasp rod having two limb portions and a pair of locking plates hingedly connected together along one of said limb portions of said hasp rod, said locking plate adapted for relative swinging movement between an open position where said plates permit access to said other limb of said hasp rod and a closed position where said plates clasp said other limb of said hasp rod between said plates; said plates including aligned passages for receiving padlocks to lockingly secure said plates in said closed position.

Read the whole patent

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 May 7, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2008.
  • 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 8, 1989
GrantedMay 7, 1991
Term endedMay 7, 2008
Patent numberCA 1283790 C
Classification (IPC)E05B73/00

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMarch 8, 1989Patent grantedMay 7, 1991Term endedMay 7, 2008

Sources & verification

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