USD274912SExpiredUtility

Refractory tube

25
Assignee: FOSECO TRADING AGPriority: Jul 24, 1981Filed: Jan 7, 1982Granted: Jul 31, 1984
Est. expiryJul 24, 2001(expired)· nominal 20-yr term from priority
Inventors:Gary F. EnglishDonald E. Wiley
25
PatentIndex Score
0
Cited by
4
References
1
Claims

Claims

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

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