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
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
Classifications