Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1983-06-13
1985-08-20
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Element or attachment
D18 22
Patent
active
D02802104
REFERENCES:
patent: D274178 (1984-06-01), Schiffmacher
patent: D275499 (1984-09-01), Akazawa
patent: 4388006 (1983-06-01), Walbel
patent: 4415285 (1983-11-01), Bury
Litton Systems Inc.
Ribando Brian L.
Zarfas Louis S,.
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