USD320257SExpiredUtility

Rotary spool valve

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Assignee: A DEC INCPriority: Jan 23, 1989Filed: Jan 23, 1989Granted: Sep 24, 1991
Est. expiryJan 23, 2009(expired)· nominal 20-yr term from priority
Inventors:George K. Austin, Jr.Charles Nelson
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PatentIndex Score
1
Cited by
6
References
1
Claims

Claims

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

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