Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1995-01-20
1996-04-09
Douglas, Alan P.
Printing and office machinery
Typewriter or calculator
Element or attachment
Patent
active
D03687341
REFERENCES:
patent: D275499 (1984-09-01), Akazawa
patent: D280210 (1985-08-01), Ledoux
patent: D319837 (1991-09-01), Urawa
patent: 4388006 (1983-06-01), Waibel
Douglas Alan P.
Snapp S.
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