Concrete bridge section

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Description

FIG. 1 is a front elevational view of the concrete bridge section showing my new design, the rear being a mirror image thereto;

FIG. 2 is a top plan view thereof;

FIG. 3 is bottom plan view thereof; and,

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image thereto.

Referenced Cited
U.S. Patent Documents
D356163 March 7, 1995 Ryan
2161176 June 1939 Leisner
4564313 January 14, 1986 Niswander et al.
4587684 May 13, 1986 Miller
4797030 January 10, 1989 Lockwood
Foreign Patent Documents
850843 July 1981 SUX
Patent History
Patent number: D406902
Type: Grant
Filed: Jul 28, 1997
Date of Patent: Mar 16, 1999
Assignee: Con/Span Bridge Systems, Inc. (Dayton, OH)
Inventor: William D. Lockwood (Dayton, OH)
Primary Examiner: Doris Clark
Law Firm: Jacox, Meckstroth & Jenkins
Application Number: 0/74,683
Classifications
Current U.S. Class: Structure (D25/1); Miscellaneous (D25/199)
International Classification: 2503;