USD253716SExpiredUtility

Valve spool

54
Individually held — no corporate assignee on recordPriority: Aug 8, 1977Filed: Aug 8, 1977Granted: Dec 18, 1979
Est. expiryAug 8, 1997(expired)· nominal 20-yr term from priority
Inventors:Russell W. Spitz
54
PatentIndex Score
5
Cited by
3
References
1
Claims

Claims

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

Join the waitlist — get patent alerts

Track USD253716S — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.