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John A. Balaban
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Pleasanton, CA, US
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last 30 patents
Information
Patent Grant
Tennis racket
Patent number
4,394,014
Issue date
Jul 19, 1983
John A. Balaban
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Racket stringing apparatus and method
Patent number
4,348,024
Issue date
Sep 7, 1982
John A. Balaban
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Racket stringing device
Patent number
4,339,131
Issue date
Jul 13, 1982
John A. Balaban
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Racket stringing apparatus and method
Patent number
4,326,713
Issue date
Apr 27, 1982
John A. Balaban
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
String pre-stretching apparatus and method for racket stringing mac...
Patent number
4,249,732
Issue date
Feb 10, 1981
John A. Balaban
A63 - SPORTS GAMES AMUSEMENTS