Retaining wall stringer

- Hilfiker Pipe Co.
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Description

FIG. 1 is a perspective view of my new stringer.

FIG. 2 is an end view of my stringer, as seen from the right of FIG. 1.

FIG. 3 is a cross-sectional view taken on the plane designated by Line 3--3 of FIG. 1.

FIG. 4 is a cross-sectional view taken on the plane designated by Line 4--4 of FIG. 1.

FIG. 5 is a top plan view of my stringer.

FIG. 6 is a front elevational view of my stringer.

FIG. 7 is a bottom plan view of my stringer.

FIG. 8 is a rear elevational view of my stringer.

Referenced Cited
U.S. Patent Documents
490726 January 1893 Stevenson
3877236 April 1975 O'Neill et al.
3922864 December 1975 Hilfiker
D224292 July 1972 McCaul
Patent History
Patent number: D243613
Type: Grant
Filed: Feb 6, 1976
Date of Patent: Mar 8, 1977
Assignee: Hilfiker Pipe Co. (Eureka, CA)
Inventor: William K. Hilfiker (Eureka, CA)
Primary Examiner: A. Hugo Word
Attorney: Frank A. Neal
Application Number: 5/655,888
Classifications
Current U.S. Class: D25/77
International Classification: D2501;