Typewriter

Details Typewriter Typewriter

1979-06-28

1981-05-26

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

D1801

Patent

active

D02593475

REFERENCES:
patent: D219718 (1971-01-01), Penney
patent: D253774 (1979-12-01), Bienkowski
W. A. Brown & Associates, Inc., flyer, p. 19, Model PK-144 Photoelectric Keyboard.
Industrial Design, 10/1965, p. 18, "Flatwriter" at right.
Office Products, Feb. 1977, p. 94, Hermes Calculator Keyboard & Microdata Corp., Line Printer Keyboard at top of page.

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