Combined calculator and clipboard

Details Combined calculator and clipboard Combined calculator and clipboard

1985-11-20

1988-06-14

Zarfas, Louis S.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Holder or file

D18 2, D18 7

Patent

active

D02962209

REFERENCES:
patent: D218720 (1970-09-01), Shahan
patent: D234592 (1975-03-01), Callaway
patent: D280081 (1985-08-01), Groves
patent: D284199 (1986-06-01), Li
patent: D284678 (1986-07-01), Shamoon

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