USD314156SExpiredUtility

Chalk line

71
Individually held — no corporate assignee on recordPriority: Nov 18, 1988Filed: Nov 18, 1988Granted: Jan 29, 1991
Est. expiryNov 18, 2008(expired)· nominal 20-yr term from priority
Inventors:Mark Doyle
71
PatentIndex Score
18
Cited by
9
References
1
Claims

Claims

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

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