Electronic calculator

Details Electronic calculator Electronic calculator

1998-03-25

1999-06-15

Veynar, Caron D.

Printing and office machinery

Typewriter or calculator

Combined

D10 71, 1801

Patent

active

D04109449

REFERENCES:
patent: D207794 (1967-05-01), Cherrington
patent: D322039 (1991-12-01), Chien
patent: D398250 (1998-09-01), Dietterich et al.

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