Expired Canadian patentCanada
Vacuum pump equipped with filter for the lubricating oil
CA 1289479 C · Owner: Calloni, Enzo · Inventors: Calloni, Enzo
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 device for filtering the lubricant oil used in vacuum pumps. The device which can be directly installed on the pump, for continuous or discontinuous operation is, characterized in that it is of the tangential-flow type.
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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 12, 1986
GrantedSeptember 24, 1991
Term endedSeptember 24, 2008
Patent numberCA 1289479 C
Classification (IPC)B01D61/14 +2 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.