Expired Canadian patentCanada
System for transporting seismic energy detectors
CA 974635 A · Owner: Exxon Production Research Company · Inventors: Kostelnicek, Richard J.
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 September 16, 1975. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 16, 1992.
- 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—
GrantedSeptember 16, 1975
Term endedSeptember 16, 1992
Patent numberCA 974635 A
Classification (IPC)G01V1/16
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.