Multi-purpose information center

Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Writing or drawing surface – e.g. – blackboard – drawing board,...

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D19 21, D19 23, D19 85, D19 90, D20 19, D6553, D6569, 1906

Patent

active

D03902633

REFERENCES:
patent: D161787 (1951-01-01), Pakras et al.
patent: D234557 (1975-03-01), Tiburzi
patent: D242098 (1976-11-01), Leopold
patent: D250652 (1978-12-01), Anderson
patent: D267842 (1983-02-01), Brescia et al.
patent: D278493 (1985-04-01), Brescia et al.
patent: 373235 (1887-11-01), Isbell
patent: 4133123 (1979-01-01), Anderson

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