Expired Canadian patentCanada
Detachable wear pad for the third rail shoe on an electric railway car
CA 1067163 A · Owner: Abex Corporation · Inventors: Sierk, Raymond H.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For: THIRD RAIL SHOE Abstract of the Disclosure, The wear pad of a third rail shoe for an electric railway car has the electrode opening therein so configured as to tip the electrode substantially to the attitude of the overhead able attached to the electrode.
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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 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 27, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedNovember 27, 1979
Term endedNovember 27, 1996
Patent numberCA 1067163 A
Classification (IPC)B60L5/30 +1 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.