Expired Canadian patentCanada
Vibratory tuning of rotatable blades are elastic fluid machines
CA 1057664 A · Owner: Westinghouse Electric Corporation · Inventors: Wagner, John T.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Rotatable blades are tuned by forming a plurality of ribs on concave air foil surfaces of the blades adjacent trailing edges in longitudinal alignment with the fluid flow.
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 July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 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—
GrantedJuly 3, 1979
Term endedJuly 3, 1996
Patent numberCA 1057664 A
Classification (IPC)F01D5/26 +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.