Combined book with erasable cover and detachable pen

Details Combined book with erasable cover and detachable pen Combined book with erasable cover and detachable pen

1984-04-18

1986-12-16

Ansher, Bernard

Office supplies; artists and teachers materials

Book, album or cover

Patent

active

D02872544

REFERENCES:
patent: D157715 (1950-03-01), Wolfe
patent: D179909 (1957-03-01), Levin
patent: D179993 (1957-04-01), Waxman et al.
patent: D274589 (1984-07-01), Christensen et al.
Current, Aug. 1980, p. 43, right side of page, Memo Pad.

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