Pencil box calculator

Details Pencil box calculator Pencil box calculator

1996-05-31

1997-08-05

Gandy, James

Printing and office machinery

Typewriter or calculator

Combined

D3206, D10 71, D18 7, D19 65, 1801

Patent

active

D03820092

REFERENCES:
patent: D60192 (1922-01-01), Mason, Jr.
patent: D235080 (1975-05-01), Verona
patent: D250063 (1978-10-01), Nishino et al.
patent: D305849 (1990-02-01), Das et al.
patent: D345581 (1994-03-01), Popovits
patent: D348080 (1994-06-01), Popovits
patent: 4878867 (1989-11-01), Dworman et al.
patent: 5069645 (1991-12-01), Dworman et al.

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