Printing and office machinery – Typewriter or calculator – Calculator
Patent
1987-07-06
1990-04-03
Holtje, Nelson C.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D03070328
REFERENCES:
patent: D251272 (1979-03-01), Hazama et al.
patent: D261773 (1981-11-01), Ichikawa et al.
patent: D263966 (1982-04-01), Kobayashi
patent: D265837 (1982-08-01), Yamagami
patent: D268346 (1983-03-01), Kobayashi
patent: D284200 (1986-06-01), Hayashi
patent: D297947 (1988-10-01), Yubisul et al.
Sawada Masaji
Takahashi Toshiya
Holtje Nelson C.
Sharp Corporation
Veynar Caron D.
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