Keyboard

Details Keyboard Keyboard

1978-12-13

1980-08-05

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Element or attachment

D18 7, D1801

Patent

active

D02562529

REFERENCES:
patent: D245109 (1977-07-01), Yoshioka
patent: 1444680 (1923-02-01), Gilfoy
patent: 4029915 (1977-06-01), Ojima
The Office, Mar. 1965, p. 106-left Keyboard on Burroughs J700.
Popular Science, Sep. 1977, p. 26-T.I. Data Clip Calculator at center right.

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