USD280547SExpiredUtility

Heat exchanger

44
Assignee: NISSHIN CHEMICAL IND CO LTDPriority: Jul 29, 1982Filed: Jul 29, 1982Granted: Sep 10, 1985
Est. expiryJul 29, 2002(expired)· nominal 20-yr term from priority
Inventors:Masafumi Fukumoto
44
PatentIndex Score
3
Cited by
12
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a heat exchanger, as shown and described.

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