USD272763SExpiredUtility
Dental hygiene device
Individually held — no corporate assignee on recordPriority: Oct 19, 1981Filed: Oct 19, 1981Granted: Feb 21, 1984
Est. expiryOct 19, 2001(expired)· nominal 20-yr term from priority
Inventors:Quentin H. Coffman
28
PatentIndex Score
4
Cited by
6
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a dental hygiene device, substantially as shown.
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