Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1980-02-11
1982-09-21
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Element or attachment
D1899
Patent
active
D02662566
REFERENCES:
patent: 3621968 (1971-11-01), Kondur, Jr.
patent: 3805698 (1974-04-01), Bowers et al.
patent: 4156572 (1979-05-01), Carena
IBM Technical Disclosure Bulletin, vol. 18, No. 11, Apr. 1976, p. 3538-Ribbon Cartridge.
Cavender J. T.
Hawk Jr. Wilbert
Muckenthaler George J.
NCR Corporation
Zarfas Louis S,.
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