Electronic calculator

Details Electronic calculator Electronic calculator

1986-11-24

1989-11-21

Holtje, Nelson C.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D03047318

REFERENCES:
patent: D241381 (1976-09-01), Garnier
patent: D248994 (1978-08-01), Ikeda
patent: D249092 (1978-08-01), Ohie
patent: D273201 (1984-03-01), Sakata
patent: D279109 (1985-06-01), Yubisui et al.
patent: D293920 (1988-01-01), Yubisui et al.
patent: D297947 (1988-10-01), Yubisui et al.
patent: 4264962 (1981-04-01), Kodaira
patent: 4369498 (1983-01-01), Schulte
HFE-Retailing Home Furnishings, 6/5/1978, p. 55, bottom left #EL-8142 & EL-8138E.
W. Bell Catalog, 1981, p. 234, Sharp Calculator #H, top right of page.
W. Bell Catalog, 1984, p. 274, Texas Instruments TI-1766 #A, top left of page.

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