Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Writing or drawing surface – e.g. – blackboard – drawing board,...
Patent
1992-02-19
1993-06-22
Holtje, Nelson C.
Office supplies; artists and teachers materials
Equipment for writing, drawing, or for fine arts
Writing or drawing surface, e.g., blackboard, drawing board,...
D19 35, D21 59
Patent
active
D03367517
REFERENCES:
patent: D224739 (1972-09-01), Lamberson
patent: D279489 (1985-07-01), Mak
patent: D279490 (1985-07-01), Mak
patent: D282183 (1986-01-01), Shiraishi
patent: D299472 (1989-01-01), Phinney
patent: D327498 (1992-06-01), Watson et al.
patent: D330042 (1992-10-01), Yamaguchi et al.
patent: 4306868 (1981-12-01), Hankins
patent: 4801266 (1989-01-01), Kinberg
Holtje Nelson C.
Hop Lee Cheong Industrial Co.
Thompson Martha
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