Ring binder

Details Ring binder Ring binder

1996-09-18

1998-01-13

Thompson, Martie

Office supplies; artists and teachers materials

Book, album or cover

Element or attachment

D19 27, 1904

Patent

active

D03891836

REFERENCES:
patent: D325928 (1992-05-01), Bourgeois
patent: D356112 (1995-03-01), Constantine
patent: D377805 (1997-02-01), To
patent: 2091188 (1937-08-01), St. Louis
patent: 2801115 (1957-07-01), Federbush et al.
patent: 3101719 (1963-08-01), Vernon
patent: 3334920 (1967-08-01), Orth
patent: 3404685 (1968-10-01), Vernon
Boorum & Pease, p. 36, see Ringbinder Mechanism, left side of page, .COPYRGT., 1954.

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