USD243399SExpiredUtility
Combined filter, aerator and spray cooling unit for swimming pools
Individually held — no corporate assignee on recordPriority: Jan 7, 1975Filed: Jan 7, 1975Granted: Feb 15, 1977
Est. expiryJan 7, 1995(expired)· nominal 20-yr term from priority
Inventors:William G. Lupton
29
PatentIndex Score
1
Cited by
5
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a combined filter, aerator and spray cooling unit for swimming pools, as shown and described.
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