USD250177SExpiredUtility
Combination protractor and compass
Individually held — no corporate assignee on recordPriority: Mar 7, 1977Filed: Mar 7, 1977Granted: Nov 7, 1978
Est. expiryMar 7, 1997(expired)· nominal 20-yr term from priority
Inventors:Herman L. Hulen
44
PatentIndex Score
7
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a combined protractor and compass, as shown.
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