USD357881SExpiredUtility

Portable railroad crossing signal

24
Individually held — no corporate assignee on recordPriority: Aug 16, 1993Filed: Aug 16, 1993Granted: May 2, 1995
Est. expiryAug 16, 2013(expired)· nominal 20-yr term from priority
Inventors:Bruce E. ChinnGarry W. Viebrock
G01B 11/27F16M 2200/022F16M 11/10F16M 11/28E01F 9/615F16M 13/02F16M 11/32
24
PatentIndex Score
6
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The design for a portable railroad crossing signal, as shown and described.

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