Patent Yard Sign in
Expired Canadian patentCanada

Position indicator for guitars

CA 1091488 A · Owner: Smith, Walter E. · Inventors: Smith, Walter E.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

This invention is directed to a position indicator which is mounted along one margin of a set of strings of a musical instrument and includes a set of projections so arranged that, when engaged by a slide bar placed across the strings, a preselected chord may be produced the projections, being deflectable so that the slide bar may be moved along the strings past a projection while maintaining contact with the strings.

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

  • Granted December 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 16, 1997.
  • 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 9, 1978
GrantedDecember 16, 1980
Term endedDecember 16, 1997
Patent numberCA 1091488 A
Classification (IPC)G09B15/06

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMay 9, 1978Patent grantedDec 16, 1980Term endedDec 16, 1997

Sources & verification

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