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

1993-07-19

1995-01-03

Holtje, Nelson C.

Printing and office machinery

Typewriter or calculator

Combined

D14100, D18 7, D24165

Patent

active

D03540723

REFERENCES:
patent: D324513 (1992-03-01), Sakaguchi et al.
patent: D340917 (1993-11-01), Sakaguchi et al.
patent: D341573 (1993-11-01), Sakaguchi et al.
patent: D345732 (1994-04-01), Sakaguchi et al.

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