Electronic calculator

Details Electronic calculator Electronic calculator

1996-04-22

1997-01-07

Gandy, James M.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D03771903

REFERENCES:
patent: D273303 (1984-04-01), Sakamoto
patent: D273593 (1984-04-01), Sakamoto
patent: D287024 (1986-12-01), Satake
patent: D290372 (1987-06-01), Yubisui et al.
patent: D294369 (1988-02-01), Yubisui et al.
patent: D303678 (1989-09-01), Yubisui et al.
patent: D303680 (1989-09-01), Yubisui et al.
patent: D307595 (1990-05-01), Yubisui et al.
patent: D309624 (1990-07-01), Yubisui et al.

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