USD309156SExpiredUtility

Chalk marker

Assignee: CLOVER MFG CO LTDPriority: Mar 2, 1987Filed: Mar 2, 1987Granted: Jul 10, 1990
Est. expiryMar 2, 2007(expired)· nominal 20-yr term from priority
82
PatentIndex Score
21
Cited by
6
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a chalk marker, as shown and described.

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