Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1982-08-09
1984-11-13
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Element or attachment
Patent
active
D02763532
REFERENCES:
patent: D271310 (1983-11-01), Canning et al.
patent: 4132485 (1979-01-01), Hess
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