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Expired Canadian patentCanada

Perimeter weighted iron type golf club head with complementary intermediate weighting system

CA 1304428 C · Owner: Antonious, Anthony J. · Inventors: Antonious, Anthony J.

CIPO record

Overview

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

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Abstract From the Canadian patent

A perimeter weighted iron-type golf club head with a recessed or cavity back and a peripheral mass having an improved weight configuration formed of weight members within the cavity which are positioned adjacent to and on opposite sides of the center of percussion of the golf club head and located between the center of percussion and the peripheral mass of the golf club head.

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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 June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 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.
FiledMarch 10, 1988
GrantedJune 30, 1992
Term endedJune 30, 2009
Patent numberCA 1304428 C
Classification (IPC)A63B53/04 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 10, 1988Patent grantedJune 30, 1992Term endedJune 30, 2009

Sources & verification

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