Combined calculator and cover

Details Combined calculator and cover Combined calculator and cover

1991-01-22

1992-11-10

Vales-Lado, Carmen H.

Printing and office machinery

Typewriter or calculator

Calculator

D18 2

Patent

active

D03309070

REFERENCES:
patent: D258966 (1981-04-01), McCrae
patent: D266855 (1982-11-01), Yoshioka et al.
patent: D273305 (1984-04-01), Kurozumi
patent: D306176 (1990-02-01), Yubisui et al.
Hong Kong Enterprise, Jul. 1988, p. 206 Pyxis Calculator-GE-C110, low ctr. rt. of page.
Hong Kong Enterprise, Oct. 1989, p. 210, Calculator-K894, left center of page.
Hong Kong Enterprise, Oct. 1989, p. 227, Calculator-MC-63, top center left of page.

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