Ring binder

Details Ring binder Ring binder

1995-11-21

1997-08-19

Lucas, Susan J.

Office supplies; artists and teachers materials

Book, album or cover

Element or attachment

1904

Patent

active

D03825930

REFERENCES:
patent: 1228866 (1917-06-01), Amoroso
patent: 3263687 (1966-08-01), Weichert
patent: 4573822 (1986-03-01), Allen
patent: 4623276 (1986-11-01), Kinneir
patent: 4693624 (1987-09-01), Moosmuller
patent: 5273370 (1993-12-01), Bland et al.
patent: 5332327 (1994-07-01), Gillum

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