Printing and office machinery – Typewriter or calculator – Calculator
Patent
1989-03-20
1991-08-20
Holtje, Nelson C.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D03192520
REFERENCES:
patent: D257045 (1980-09-01), Ikeda
patent: D277681 (1985-02-01), Ishida
patent: D289903 (1987-05-01), Kikuchi et al.
patent: D290372 (1987-06-01), Yubisui
patent: D294368 (1988-02-01), Endo et al.
patent: D297950 (1988-10-01), Yubisui et al.
patent: D309623 (1990-07-01), Sawada et al.
Nishida Kouji
Sawada Masaji
Holtje Nelson C.
Sharp Corporation
Veynar Caron D.
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