USD610477SActiveUtility

Digital protractor

65
Assignee: LI GUANGJINPriority: Feb 13, 2009Filed: Feb 13, 2009Granted: Feb 23, 2010
Est. expiryFeb 13, 2029(~2.5 yrs left)· nominal 20-yr term from priority
Inventors:Guangjin LiChangsong Jiang
65
PatentIndex Score
16
Cited by
4
References
1
Claims

Claims

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

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