Calculator

Details Calculator Calculator

1997-01-10

1998-11-17

Veynar, Caron D.

Printing and office machinery

Typewriter or calculator

Calculator

1801

Patent

active

D04012682

REFERENCES:
patent: D269278 (1983-06-01), Yoshioka et al.
patent: D303121 (1989-08-01), Sakaguchi et al.
patent: D307917 (1990-05-01), Chen
patent: D378826 (1997-04-01), Dijkstra
Guernsey Office Supply Catalog; p. 437 C5; Scientific Calculator item "I" bottom right of page, .COPYRGT.1998.

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