Expired Canadian patentCanada
Process and apparatus for cleaning filter elements of fabric filter equipment
CA 887771 A · Owner: Lugar Gesellschaft Fur Entstaubungstechnik M.B.H. · Inventors: Gert W. Kroll
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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 December 7, 1971. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1988.
- 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—
GrantedDecember 7, 1971
Term endedDecember 7, 1988
Patent numberCA 887771 A
Classification (IPC)B01D46/04
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.