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Expired Canadian patentCanada

Rail anchoring clip and associated sleeper

CA 1214761 A · Owner: Broken Hill Proprietary Company Limited (The) · Inventors: Wilson, Peter K.

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 rail anchoring clip and associated sleeper assembly comprising the combination of a sleeper having raised projections which locate the rail against movement longitudinal of the sleeper, each projection having formed therein an aperture through which a rail anchoring clip extends. The clip being constructed of steel and being shaped when resiliently deformed to engage the rail foot and the underside of the sleeper.

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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 December 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 2, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 25, 1983
GrantedDecember 2, 1986
Term endedDecember 2, 2003
Patent numberCA 1214761 A
Classification (IPC)E01B9/32

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJan 25, 1983Patent grantedDec 2, 1986Term endedDec 2, 2003

Sources & verification

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