USD484610SExpiredUtility

Concrete tunnel for a rapid transit train

82
Assignee: CON SPAN BRIDGE SYSTEMS LTDPriority: Feb 12, 2003Filed: Feb 12, 2003Granted: Dec 30, 2003
Est. expiryFeb 12, 2023(expired)· nominal 20-yr term from priority
Inventors:William D. Lockwood
82
PatentIndex Score
28
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design of a concrete tunnel for a rapid transit train, as shown and described.

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