USD358631SExpiredUtility
Dual brush vacuum cleaner
Individually held — no corporate assignee on recordPriority: Dec 13, 1993Filed: Dec 13, 1993Granted: May 23, 1995
Est. expiryDec 13, 2013(expired)· nominal 20-yr term from priority
Inventors:David Conner
21
PatentIndex Score
2
Cited by
18
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a dual brush vacuum cleaner, as shown.
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