Digital pressure-measuring device
CA 1108433 A · Owner: Mecilec, Societe Anonyme Francaise · Inventors: Guillemot, Philippe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A pressure-measuring device which operates in digital representation comprises :, -a first chamber subjected to the pressure to be measured; -a second chamber subjected to a reference pressure and connected to the first chamber through at least one opening fitted with a valve ;, -means for measuring the difference both in magnitude and in sign between the pressures prevailing respectively within the first and second chambers, said means being intended to deliver an electrical signal which is a function of said difference ;, - a circuit for detecting the instants at which said difference attains a predetermined increment + .DELTA.P or a predetermined decrement - …
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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 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 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.