Electronic calculating machine

Details Electronic calculating machine Electronic calculating machine

1976-07-30

1978-02-07

Lucas, Susan J.

Printing and office machinery

Printing equipment

Hand held or manipulated

D1801

Patent

active

D02471981

REFERENCES:
patent: D228915 (1973-10-01), Ishii
patent: D233154 (1974-10-01), Saito
Office Products, Dec. 1974, p. 37, Toshiba Calculator.

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