Railway crossing insert

Description

FIG. 1 is a perspective view of a railway crossing insert showing my new design, a portion thereof being broken away to indicate indeterminate length;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is an end elevational view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D30792 May 1899 Pratt
D32406 March 1900 Hazard
1866759 July 1932 Duryea
1975391 October 1934 Evenson
Patent History
Patent number: D301435
Type: Grant
Filed: Mar 25, 1987
Date of Patent: Jun 6, 1989
Inventor: John K. Martin (Calgary, Alberta)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Kay H. Chin
Attorney: George H. Dunsmuir
Application Number: 7/40,390