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Expired Canadian patentCanada

Golf putter with interchangeable shafts and heads

CA 1214803 A · Owner: Nardozzi, Michael, Jr. · Inventors: Nardozzi, Michael, Jr.

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 putter shaft has a lower end portion extending angularly relative to the shaft longitudinal axis and is slidably engageable with a guideway in the top of a removable putter head. The guideway extends substantially the length of the putter head and includes an entry at one end portion and a stop at the opposite end portion. The guideway is selectively oriented relative to a striking surface of the putter head so that when a shoulder on the shaft lower end portion abuts the guideway stop, the putter head is in the desired spatial relation with the putter shaft. Cooperating releasable locking devices carried on the lower end portion of the putter shaft and within the guideway of the putter …

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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 December 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 2, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 11, 1984
GrantedDecember 2, 1986
Term endedDecember 2, 2003
Patent numberCA 1214803 A
Classification (IPC)A63B53/04 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedApril 11, 1984Patent grantedDec 2, 1986Term endedDec 2, 2003

Sources & verification

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