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Expired Canadian patentCanada

Transducer enclosure

CA 2024826 C · Owner: Harman International Industries, Incorporated · Inventors: House, William Neal

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

An enclosure (10) for mounting two transducers (12, 14) includes a wall (20, 22) defining an enclosure (10) interior. The enclosure (10) also includes a wall (54 and/or 56) for dividing the enclosure (10) anterior into a first portion (16) and a second portion (18). The enclosure (10) wall (20 andlor 22) includes a vent (52) for venting one of the first (16) and second (18) portions outside the enclosure (10), and a vent (74) for renting the other of the first (16) and second (18) portions outside the enclosure (10). The enclosure (10) further comprises a step (38) for mounting a transducer (12) perimetral edge: The step (38) extends inwardly from the enclosure (10) wall (20 and/or 22) into …

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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

  • Filed September 7, 1990 and granted February 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 7, 1990
GrantedFebruary 8, 2000
Term endedSeptember 7, 2010
Patent numberCA 2024826 C
Classification (IPC)H04R1/02 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedSep 7, 1990Patent grantedFeb 8, 2000Term endedSep 7, 2010

Sources & verification

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