Electronic calculator with solar cell

Details Electronic calculator with solar cell Electronic calculator with solar cell

1989-10-27

1991-06-18

Holtje, Nelson C.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D03176193

REFERENCES:
patent: D308692 (1990-06-01), Sakaguchi et al.
patent: D308693 (1990-06-01), Sakaguchi et al.
patent: D308883 (1990-06-01), Sakaguchi et al.
Webcor Brochure; Model NS400.
Unisonic Brochure; LC287.

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