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Expired Canadian patentCanada

Microphone boom hinge

CA 1305840 C · Owner: Wiegel, Christopher D. · Inventors: Wiegel, Christopher D.

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

A microphone boom hinge is comprised of a pair of identical members disposed in locking interfitting relationship, each member having an end to be stationarily disposed on an end of a microphone boom and the other end having a pivot pin and an aperture on spaced apart longitudinally extending ears and configured to rotate about a transverse axis to provide for articulatory motion of an assembled boom. Fig.: 1

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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 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 20, 1987
GrantedAugust 4, 1992
Term endedAugust 4, 2009
Patent numberCA 1305840 C
Classification (IPC)H04R1/02 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 20, 1987Patent grantedAug 4, 1992Term endedAug 4, 2009

Sources & verification

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