Printing and office machinery – Typewriter or calculator – Calculator
Patent
1992-07-28
1994-08-16
Douglas, Alan P.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D03497224
REFERENCES:
patent: D218716 (1970-09-01), Yotsukura
patent: D222265 (1971-10-01), Ishida et al.
patent: D230405 (1974-02-01), Jinbo
patent: D279104 (1985-06-01), Satake
patent: D318286 (1991-07-01), Sakaguchi et al.
Best Catalog; 1992/93; p. 358; #10 Casio 2-Color Heavy-Duty Printing Calculator; bottom right.
Casio Computer Co. Ltd.
Douglas Alan P.
Veynar Caron D.
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