USD342051SExpiredUtility

One-way valve for plugging the brake air line of a tractor trailer when working on the air brake system

28
Individually held — no corporate assignee on recordPriority: May 24, 1991Filed: May 24, 1991Granted: Dec 7, 1993
Est. expiryMay 24, 2011(expired)· nominal 20-yr term from priority
Inventors:Charles J. Burnight
28
PatentIndex Score
6
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a one-way valve for plugging the brake air line of a tractor trailer when working on the air brake system, as shown and described.

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