Combined calculator and clipboard

Details Combined calculator and clipboard Combined calculator and clipboard

1984-08-13

1986-08-05

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Combined

D18 7, D19 88

Patent

active

D02849763

REFERENCES:
patent: D201111 (1965-05-01), Fleming
patent: D218720 (1970-09-01), Shahan
patent: D253438 (1979-11-01), Markley
patent: 2782482 (1957-02-01), Baril et al.
patent: 3560092 (1971-02-01), Coney
patent: 4308951 (1982-01-01), Walker, Jr.

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