Typewriter

Details Typewriter Typewriter

1977-03-15

1979-06-19

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

D1801

Patent

active

D02521547

REFERENCES:
patent: D191550 (1961-10-01), Demmel
patent: D206296 (1966-11-01), Baugaman
patent: D212652 (1968-11-01), Dietrich et al.

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