Binder ring mechanism

Office supplies; artists and teachers materials – Book – album or cover – Element or attachment

Design Patent

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Design Patent

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D0436994

CLAIM:
The ornamental design for a binder ring mechanism, as shown and described.

REFERENCES:
patent: D. 377805 (1997-02-01), To
patent: D. 392673 (1998-03-01), Whaley
patent: 827298 (1906-07-01), Egge
patent: 1761589 (1930-06-01), Schade
patent: 4368995 (1983-01-01), Cohen
patent: 5810500 (1998-09-01), Whaley
patent: 5846013 (1998-12-01), To
patent: 5971649 (1999-10-01), To

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