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

1994-04-21

1995-09-26

Douglas, Alan P.

Printing and office machinery

Typewriter or calculator

Combined

D14100, D18 7

Patent

active

D03626725

REFERENCES:
patent: D325571 (1992-04-01), Sakaguchi et al.
patent: D327493 (1992-06-01), Hayashi
patent: D328089 (1992-07-01), Haneda
patent: D354046 (1995-01-01), Sakaguchi et al.

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