Rail insulator
Description
FIG. 1 is a front elevational view of a rail insulator showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a perspective view thereof;
FIG. 4 is a top plan view thereof; and,
FIG. 5 is a bottom plan view thereof.
Referenced Cited
U.S. Patent Documents
1868992 | July 1932 | Re Qua |
2853775 | September 1958 | Drake |
2885153 | May 1959 | Bartley |
3067947 | December 1962 | Deenik et al. |
3389859 | June 1968 | Groff |
3666175 | May 1972 | Gill |
Patent History
Patent number: D302409
Type: Grant
Filed: Dec 15, 1986
Date of Patent: Jul 25, 1989
Inventor: John K. Martin (Calgary, Alberta, T2V 4V3)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Kay H. Chin
Attorney: Harold H. Dutton, Jr.
Application Number: 6/941,953
Type: Grant
Filed: Dec 15, 1986
Date of Patent: Jul 25, 1989
Inventor: John K. Martin (Calgary, Alberta, T2V 4V3)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Kay H. Chin
Attorney: Harold H. Dutton, Jr.
Application Number: 6/941,953
Classifications