| D898583 |
Pop up packet |
Ashley Beardsall, Richard G. Sargent |
2020-10-13 |
| RE47626 |
End terminal |
Brian E. Smith, Patrick A. Leonhardt |
2019-10-01 |
| 9181665 |
Barrier system and connector |
James B. Welch |
2015-11-10 |
| 8905382 |
End terminal |
Brian E. Smith, Patrick A. Leonhardt |
2014-12-09 |
| 8647012 |
Gate for barrier system and methods for the assembly and use thereof |
Douglas E. Wilkinson, Anthony R. Van Brocklin |
2014-02-11 |
| 8360400 |
Guardrail assembly, breakaway support post for a guardrail and methods for the assembly and use thereof |
Patrick A. Leonhardt, Michael J. Buehler, Brent S. Sindorf |
2013-01-29 |
| 8348546 |
Method for transferring a barrier |
James B. Welch, Douglas E. Wilkinson, Patrick A. Leonhardt, Michael H. Oberth, Sean Thompson +1 more |
2013-01-08 |
| 8215619 |
Guardrail assembly, breakaway support post for a guardrail and methods for the assembly and use thereof |
Patrick A. Leonhardt, Michael J. Buehler, Brent S. Sindorf |
2012-07-10 |
| 8109692 |
Barrier transfer device, system and method for the use thereof |
James B. Welch, Douglas E. Wilkinson, Patrick A. Leonhardt, Michael H. Oberth, Sean Thompson +1 more |
2012-02-07 |
| 6554529 |
Energy-absorbing assembly for roadside impact attenuator |
Michael J. Buehler |
2003-04-29 |
| 6461076 |
Vehicle impact attenuator |
Michael J. Buehler |
2002-10-08 |
| 6270020 |
Roadway deicing system |
Jeffrey M. Thompson, David L. June |
2001-08-07 |
| 5868521 |
Highway crash cushion and components thereof |
Michael H. Oberth, David C. Gertz, John V. Machado |
1999-02-09 |
| 5314261 |
Vehicle crash cushion |
— |
1994-05-24 |
| 4711481 |
Vehicle impact attenuating device |
William G. Krage, Owen S. Denman |
1987-12-08 |
| 4583716 |
Universal anchor assembly for impact attenuation device |
Peter B. Morehead, James B. Welch |
1986-04-22 |
| 4452431 |
Restorable fender panel |
Peter B. Morehead |
1984-06-05 |