Calculator

Details Calculator Calculator

1977-01-17

1978-11-14

Lucas, Susan J.

Printing and office machinery

Printing equipment

Hand held or manipulated

D1801

Patent

active

D02502941

REFERENCES:
patent: D236353 (1975-08-01), Link
patent: 3017088 (1962-01-01), Edwards et al.
Computer Design, Mar. 1976, p. 114, Portable Terminal.

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