Expired Canadian patentCanada
Silo door construction and discharge chute positioning apparatus
CA 1066012 A · Owner: Railoc Company · Inventors: Rutten, James B.; Therrien, Gordon G.; Gaylord, Richard S.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a silo door system and a double arm unloader chute together with a positioning means for maintaining alignment of a silo unloader discharge chute with apertures in the door system.
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 November 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 13, 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 13, 1979
Term endedNovember 13, 1996
Patent numberCA 1066012 A
Classification (IPC)E04H7/22 +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.