USD289429SExpiredUtility
Portable filtration unit
Individually held — no corporate assignee on recordPriority: Jun 15, 1984Filed: Jun 15, 1984Granted: Apr 21, 1987
Est. expiryJun 15, 2004(expired)· nominal 20-yr term from priority
Inventors:Harold C. Thumberger
53
PatentIndex Score
8
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a portable filtration unit, as shown and described.
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