Electronic calculator having the functions of telephone book, ad

Details Electronic calculator having the functions of telephone book, ad Electronic calculator having the functions of telephone book, ad

1994-11-01

1996-01-02

Douglas, Alan P.

Printing and office machinery

Typewriter or calculator

Combined

Patent

active

D03658406

REFERENCES:
patent: D349511 (1994-08-01), Sakaguchi et al.
patent: D351854 (1994-10-01), Takahata
patent: D353614 (1994-12-01), Ohno et al.

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