Multisensor ground-force measuring means for vibroseis
CA 1232774 A · Owner: Shell Canada Limited · Inventors: Huizer, Willem; Van Der Voort, Gabriel N.M.M.; Van Der Toorn, Jacobus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A means for measure my the force which in use, is exerted by, the base plate of a seismic vibrator on the earth surface. The said means comprises a plurality of individual sensor elements which are arranged on the side of the said base plate which in, use, is directed to the earth surface. (Fig. 1)
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 February 16, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2005.
- 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.