Printing and office machinery – Typewriter or calculator – Calculator
Patent
1987-10-16
1990-08-07
Holtje, Nelson C.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D03097498
REFERENCES:
patent: D243250 (1977-02-01), Hazama
patent: D279688 (1985-07-01), Kitai et al.
patent: D293688 (1988-01-01), Yubisui et al.
patent: D301895 (1989-06-01), Hayashi
Radio Shack; p. 167; upper left corner, PC-6, Pocket Computer Examers Office.
The Sharper Image; Sep. 1985; p. 42, lower left corner; Data Bank by Casio.
Casio Computer Co. Ltd.
Holtje Nelson C.
Veynar Caron D.
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