Self-contained portable kit for educational and organizational u

Details Self-contained portable kit for educational and organizational u Self-contained portable kit for educational and organizational u

1987-10-14

1990-11-20

Burke, Wallace R.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

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

D20 10

Patent

active

D03122794

REFERENCES:
patent: 3900060 (1975-08-01), Shammas
patent: 4451067 (1984-05-01), Williams

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