USD312876SExpiredUtility

Long-tube heatless concentrator

29
Assignee: SUPELCO INCPriority: Dec 16, 1987Filed: Dec 16, 1987Granted: Dec 11, 1990
Est. expiryDec 16, 2007(expired)· nominal 20-yr term from priority
Inventors:Paul S. Spock
29
PatentIndex Score
2
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a long-tube heatless concentrator, as shown and described.

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