Telemetry system
CA 1098202 A · Owner: Sperry-Sun, Inc. · Inventors: Chaney, Preston E.; Cox, William H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A telemetry system for transmitting data between a downhole location in a wellbore and the surface of a well utilizing an acoustic signal which operates within naturally occurring passbands on a string of pipe having substantially fixed frequency ranges which are related to pipe length and condition.
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 March 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.