USD471078SExpiredUtility

Slip-proof block

36
Assignee: CHEN CHANG-HUIPriority: Jan 2, 2002Filed: Jan 2, 2002Granted: Mar 4, 2003
Est. expiryJan 2, 2022(expired)· nominal 20-yr term from priority
Inventors:Chang-Hui Chen
36
PatentIndex Score
3
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a slip-proof block, as shown and described.

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