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Expired Canadian patentCanada

Collapsible guitar with quick disconnect neck and submerged string tunnels

CA 2124143 C · Owner: Stewart, Leland W. · Inventors: Stewart, Leland W.

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 musical instrument includes a neck, a body and a quickrelease neck clamp adjacent the neck and the body. The quickrelease neck clamp includes a neck plate attached to the neck a, body assembly with an elongated body assembly pocket attached to the body and at least one releasable fastener adjacent both the neck plate and the body assembly. The body includes a front surface formed on the body that defines a front surface plane and the elongated body assembly pocket defines an axis that is parallel to the front surface plane.

Read the whole patent

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 May 24, 1994 and granted March 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 24, 1994
GrantedMarch 2, 1999
Term endedMay 24, 2014
Patent numberCA 2124143 C
Classification (IPC)G10D3/09 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedMay 24, 1994Patent grantedMarch 2, 1999Term endedMay 24, 2014

Sources & verification

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