Office supplies; artists and teachers materials – Teaching material – Demonstrator or exhibitor
Patent
1991-04-11
1993-04-13
Burke, Wallace R.
Office supplies; artists and teachers materials
Teaching material
Demonstrator or exhibitor
Patent
active
D03347737
REFERENCES:
patent: D189789 (1961-02-01), Berzar
patent: 3750308 (1973-08-01), Nelson
patent: 3879802 (1975-04-01), Thin
patent: 4713011 (1987-12-01), Alnafissa
patent: 4747780 (1988-05-01), Trany
Brown Melody
Burke Wallace R.
Miller Richard L.
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