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Expired Canadian patentCanada

Sound reverberator device for detachable connection to the strings of astring musical instrument

CA 1297419 C · Owner: Mauffette, Claude · Inventors: Dallaire, Michel; Aspri, Roberto; Mauffette, Claude

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 sound reverberator device for detachable connection to the strings of a string musical instrument which has strings tensioned over a bridge piece connected to the top wall of the sound box or the instrument. The reverberator comprises three spaced apart metal coil springs secured side-by-side at a common end to a spring support. A metallic string attachment member is secured to a free end of each of the springs. The attachment member has string engaging fingers for engaging a respective one of a pair of adjacent strings of the musical instrument. The attachment member further has a bridge abutment portion for contact with the bridge piece. When the reverberator is connected to the musical …

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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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 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.
FiledFebruary 25, 1988
GrantedMarch 17, 1992
Term endedMarch 17, 2009
Patent numberCA 1297419 C
Classification (IPC)G10D3/02 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedFeb 25, 1988Patent grantedMarch 17, 1992Term endedMarch 17, 2009

Sources & verification

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