申请人 |
PORTEC RAIL PRODUCTS, INC.;SINGLETON, STEVEN, D.;MOSPAN, JOHN, W.;REDFIELD, MATTHEW, P.;URMSON, W., THOMAS, JR.;LUCKE, CHRISTOPHER, ALAN |
发明人 |
SINGLETON, STEVEN, D.;MOSPAN, JOHN, W.;REDFIELD, MATTHEW, P.;URMSON, W., THOMAS, JR.;LUCKE, CHRISTOPHER, ALAN |