Electronic calculating machine

Details Electronic calculating machine Electronic calculating machine

1977-09-06

1979-03-06

Lucas, Susan J.

Printing and office machinery

Typewriter or calculator

Calculator

D1801

Patent

active

D02512726

REFERENCES:
patent: D229065 (1973-11-01), Maeda et al.
The Office, Oct. 1976, p. 134, Portable Terminal.
Office Products, Apr. 1974, p. 62, Scientific Calculator.
Office Products, May 1975, p. 70-Eight Digit Pocket Calculator.

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