Tennis score keeper

Details Tennis score keeper Tennis score keeper

1988-09-26

1991-07-30

Ansher, Bernard

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Scorer or indicator for game or sport

Patent

active

D03186288

REFERENCES:
patent: 3722461 (1973-03-01), Forman
patent: 3730131 (1973-05-01), Izzo
patent: 3777699 (1973-12-01), Pfleger
patent: 4097855 (1978-06-01), Salvo
patent: 4189143 (1980-02-01), Van Auken et al.
patent: 4738449 (1988-04-01), Droz

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