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Expired Canadian patentCanada

Racket with detachably mounted and vibration damped hoop

CA 1089506 A · Owner: Fischer Gesellschaft M.B.H. · Inventors: Fischer, Josef

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 racket is defined by a hoop which carries striking means and is connected to a bifurcated extension of a shaft and handle member by a plurality of vibration-absorbing elastic elements, Each elastic element is in the form of a block of resilient material, Two supporting plates are positioned on opposite sides of each block with one plate being secured to the block, A first of the plates is secured to the hoop and the second plate is secured to the bifurcated extension.

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 November 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 11, 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.
FiledJanuary 6, 1977
GrantedNovember 11, 1980
Term endedNovember 11, 1997
Patent numberCA 1089506 A
Classification (IPC)A63B60/54 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedJan 6, 1977Patent grantedNov 11, 1980Term endedNov 11, 1997

Sources & verification

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