Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1991-10-09
1993-12-14
Douglas, Alan P.
Printing and office machinery
Typewriter or calculator
Element or attachment
Patent
active
D03422763
REFERENCES:
patent: D285808 (1986-09-01), Fuziwara et al.
patent: D302437 (1989-07-01), Altmann et al.
patent: D304597 (1989-11-01), Sakurai
patent: D307436 (1990-04-01), Endo et al.
patent: D320037 (1991-09-01), Matsuoka et al.
patent: D328092 (1992-07-01), Inoue et al.
Alps Electric Co. ,Ltd.
Bever Patrick T.
Douglas Alan P.
Hunt Ann
Shoup Guy W.
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