Ring binder

Details Ring binder Ring binder

1993-05-28

1995-01-24

Burke, Wallace R.

Office supplies; artists and teachers materials

Book, album or cover

Ring bound or looseleaf type

Patent

active

D03547680

REFERENCES:
patent: D33908 (1901-01-01), Miller
patent: D67907 (1925-07-01), Shears
patent: D138689 (1944-09-01), DeVry
patent: D196099 (1963-08-01), Sibley
patent: D201663 (1065-07-01), Bifaro
patent: D212148 (1968-08-01), Dean
patent: 2801115 (1957-07-01), Federbush et al.

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