Planetarium or similar article

Details Planetarium or similar article Planetarium or similar article

1985-09-27

1988-03-15

Ansher, Bernard

Office supplies; artists and teachers materials

Teaching material

Demonstrator or exhibitor

D19 59, D19 61, 434286

Patent

active

D02947153

REFERENCES:
patent: D198267 (1964-05-01), Musser
patent: 4579534 (1986-04-01), Lipman et al.
patent: 4588384 (1986-05-01), Shiba
patent: 4606627 (1986-08-01), Hattori
patent: 4643681 (1987-02-01), Suzuki et al.

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