Snap on device for hardcover ring binder

Details Snap on device for hardcover ring binder Snap on device for hardcover ring binder

1983-06-27

1985-06-25

Bell, Paul A.

Books, strips, and leaves

Book, element thereof, or accessory therefor

Protectors

281 40, 281 45, B42D 100, B42D 1700, B42D 306

Patent

active

045249911

ABSTRACT:
The snap on device having a U-shaped support with a spacer bar secured down the channel of the U-shaped support and a tension strip secured to the spacer bar and substantially filling the channel creates a device capable of being snapped onto a hard cover ring binder and equalizing the thickness of the binder from its spine to its opening side.

REFERENCES:
patent: 763554 (1904-06-01), Greene
patent: 806459 (1905-12-01), Brown
patent: 1118637 (1914-11-01), Dawson

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