USD287047SExpiredUtility
Heat transfer system
Individually held — no corporate assignee on recordPriority: May 30, 1984Filed: May 30, 1984Granted: Dec 2, 1986
Est. expiryMay 30, 2004(expired)· nominal 20-yr term from priority
Inventors:Kenneth V. Nygren
34
PatentIndex Score
5
Cited by
9
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a heat transfer system, as shown.
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