Whiteboard

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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Details

D19 35, D19 90, D6300, D20 10, 1906

Patent

active

D04016254

REFERENCES:
patent: D302986 (1989-08-01), Takai et al.
patent: D369833 (1996-05-01), Egan et al.
patent: D380232 (1997-06-01), Egan et al.
patent: 3148461 (1964-09-01), Johnson
patent: 4457717 (1984-07-01), Chika
patent: 4667254 (1987-05-01), Araki et al.
patent: 5492486 (1996-02-01), Ball et al.
patent: 5617660 (1997-04-01), Pollack

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