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Expired Canadian patentCanada

Multiple purpose instrument housing

CA 1060675 A · Owner: General Signal Corporation · Inventors: Buckwitz, Richard J.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure A pressure gauge assembly is provided having a pressure responsive mechanism, a case enclosing the mechanism and a transparent face plate for the front of the case. The case has a back plate and a generally cylindrical wall attached thereto. A plurality of relatively short segmented thread projections, forming a thread of relatively fine pitch pro-, trude from the outer surface of the wall and extend along a helical path. Additionally, a plurality of protuberances protrude from the inner surface of the wall. Either the projections or the protuberances function to mount the face plate. The back plate may include a portion which is recessed inwardly toward the face …

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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 August 21, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 21, 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—
GrantedAugust 21, 1979
Term endedAugust 21, 1996
Patent numberCA 1060675 A
Classification (IPC)G01D11/24 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedAug 21, 1979Term endedAug 21, 1996

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.