Multi-purpose information center

Details Multi-purpose information center Multi-purpose information center

1997-05-29

1998-05-19

Thompson, Martie

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Writing or drawing surface, e.g., blackboard, drawing board,...

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

Patent

active

D03944565

REFERENCES:
patent: D42068 (1911-12-01), Stippich
patent: D250652 (1978-12-01), Anderson
patent: D267608 (1983-01-01), Brescia et al.
patent: D273352 (1984-04-01), Adolfson
patent: D274589 (1984-07-01), Christensen et al.
patent: D297149 (1988-08-01), Johnston
patent: D302986 (1989-08-01), Takai et al.
patent: D363313 (1995-10-01), Willems
patent: 373235 (1887-11-01), Isbell
patent: 4133123 (1979-01-01), Anderson

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