Office supplies; artists and teachers materials – Office equipment not elsewhere specified
Patent
1986-09-02
1989-07-18
Dunkins, Bruce W.
Office supplies; artists and teachers materials
Office equipment not elsewhere specified
Patent
active
D03022803
REFERENCES:
patent: 1340180 (1920-05-01), O'Brien
patent: 1783484 (1930-12-01), Ross
patent: 4523364 (1985-06-01), Tsukamoto
patent: 4612685 (1986-09-01), Sanders
patent: 4658479 (1987-04-01), Sanders
Dunkins Bruce W.
Thompson Martha
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