Calculator or similar article

Details Calculator or similar article Calculator or similar article

1989-05-11

1991-06-25

Holtje, Nelson C.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D03177793

REFERENCES:
patent: D78526 (1929-05-01), Marcell
patent: D249822 (1978-10-01), Ohie et al.
patent: D255125 (1980-05-01), Hazama et al.
patent: D310093 (1990-08-01), Sakaguchi et al.
Hong Kong Enterprises; 9/1985; p. 204; #AC-88.
Hong Kong Enterprises; 7/1988; p. 376; #SC-747.

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