USD266567SExpiredUtility

Insulating riser sleeve

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Assignee: FOSECO TRADING AGPriority: Jan 21, 1977Filed: Apr 12, 1979Granted: Oct 19, 1982
Est. expiryJan 21, 1997(expired)· nominal 20-yr term from priority
Inventors:Nick Wukovich
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PatentIndex Score
2
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an insulating riser sleeve, as shown.

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