Electronic calculating machine

Details Electronic calculating machine Electronic calculating machine

1977-06-07

1978-10-24

Lucas, Susan J.

Printing and office machinery

Printing equipment

Hand held or manipulated

D1801

Patent

active

D02500639

REFERENCES:
office Products, Sep. 1975, p. 134, Pencil Box.
Office Products, Sep. 1975, p. 170, Folding Pocket Calculator.

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