Expired Canadian patentCanada
Bushing
CA 1077416 A · Owner: Clemmer Industries (1964) Limited · Inventors: Meyers, Earl
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bushing for use with an underground storage tank consisting, of a wall having inner and outer screw threads the outer thread being a, standard taper of 1° 47' and the inner thread being a non-standard taper of between 1° - 48' and 16° - 47'.
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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 May 13, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 1997.
- 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—
GrantedMay 13, 1980
Term endedMay 13, 1997
Patent numberCA 1077416 A
Classification (IPC)B65D39/08
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.