Electronic calculator or similar article

Details Electronic calculator or similar article Electronic calculator or similar article

1983-03-16

1985-10-01

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D02808323

REFERENCES:
patent: D247198 (1978-02-01), Ohie
patent: D255246 (1980-06-01), Yoshioka et al.
patent: D257990 (1981-01-01), Hirata et al.
patent: D264599 (1982-05-01), Sakamoto et al.

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