Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1991-12-05
1993-10-05
Douglas, Alan P.
Printing and office machinery
Typewriter or calculator
Element or attachment
Patent
active
D03400638
REFERENCES:
patent: D307918 (1990-05-01), Goda
patent: D311416 (1990-10-01), Richardson et al.
patent: D314971 (1991-02-01), Nakamura et al.
patent: D323342 (1992-01-01), Bellini
Douglas Alan P.
Hunt Ann
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