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Expired Canadian patentCanada

Method for stringing a game racket with vertical and diagonal sets of strings and strung racket

CA 1307303 C · Owner: Hauptman, Madeline M. · Inventors: Hauptman, Madeline M.

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 method of stringing a handled game racket with three sets of string sections using a length of string. A set of vertical string sections substantially parallel to the handle is started with a length of the string by stringing a portion of the head starting with the longer string sections. Upon reaching shorter string sections the same length is employed to create an initial number of string sections in a first set of diagonal sections. Another length of the string is used to complete the vertical string sections and start a second diagonal set. Finally, the string length that is used to create the initial string sections in one diagonal set is used to finish the other diagonal set. The …

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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 September 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 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.
FiledMay 26, 1986
GrantedSeptember 8, 1992
Term endedSeptember 8, 2009
Patent numberCA 1307303 C
Classification (IPC)A63B51/08

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedMay 26, 1986Patent grantedSep 8, 1992Term endedSep 8, 2009

Sources & verification

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