Lection

Details Lection Lection

1988-08-11

1990-03-06

Vales-Lado, Carmen H.

Office supplies; artists and teachers materials

Teaching material

Demonstrator or exhibitor

D19 59

Patent

active

D03064590

REFERENCES:
patent: D267726 (1983-01-01), Ehrenreich
patent: D289179 (1987-04-01), Musgrave
patent: 4255872 (1981-05-01), Williams, Sr.
patent: 4604064 (1986-08-01), Boehm et al.
patent: 4639225 (1987-01-01), Washizuka

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