USD291911SExpiredUtility
Submersible unit for mixing and aeration of industrial effluent or the like
Est. expiryMar 7, 2004(expired)· nominal 20-yr term from priority
Inventors:Hjalmar Fries
75
PatentIndex Score
14
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a submersible unit for mixing and aeration of industrial effluent or the like, as shown.
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