Robert L. Sivon

Follow

Person

Perry, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Modularized railway crossing grade and modules therefor
- Patent number 4,266,718
- Issue date May 12, 1981
- True Temper Corporation
- Robert L. Sivon
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES