USD448045SExpiredUtility

Ring binder having a torsionally stiffened blade

33
Assignee: HONG KONG STATIONERY MFG CO LTPriority: Dec 20, 2000Filed: Dec 20, 2000Granted: Sep 18, 2001
Est. expiryDec 20, 2020(expired)· nominal 20-yr term from priority
Inventors:Chung Nin Ko
33
PatentIndex Score
2
Cited by
13
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for ring binder having a torsionally stiffened blade, as shown and described.

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