Calculating machine

Details Calculating machine Calculating machine

1977-03-21

1978-07-04

Lucas, Susan J.

Printing and office machinery

Printing equipment

Hand held or manipulated

D1801

Patent

active

D02484196

REFERENCES:
patent: D233347 (1974-10-01), Beitler
Office Products, Jul., 1975, p. 31, calculator#L1210.
Office Products, Sep., 1975, p. 112, display calculator #320.

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