USD397702SExpiredUtility

Riser sleeve

33
Individually held — no corporate assignee on recordPriority: Jun 13, 1997Filed: Jun 13, 1997Granted: Sep 1, 1998
Est. expiryJun 13, 2017(expired)· nominal 20-yr term from priority
Inventors:Ronald C. AufderheideDavid M. GilsonJohn L. Perrins
33
PatentIndex Score
4
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
An ornamental design for a riser sleeve, as shown and described.

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