Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1977-02-10
1979-05-22
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Element or attachment
D1801
Patent
active
D02519313
REFERENCES:
patent: D145450 (1946-08-01), Kress
patent: 1566372 (1925-12-01), Campbell
patent: 1841114 (1932-01-01), Garbell
Nealon Norman
Whyte Ian H.
Hanley Lewis E.
Zarfas Louis S,.
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