USD403406SExpiredUtility
Water purification unit
Est. expiryNov 14, 2016(expired)· nominal 20-yr term from priority
Inventors:John H. Douglas
60
PatentIndex Score
11
Cited by
5
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a water purification unit, as shown and described.
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