| 9677233 |
Pedestrian barrier and barrier system |
Donald C. Pyde |
2017-06-13 |
| 9581010 |
Modular instrumented shell for a top drive assembly and method of using same |
Jason Richard Anderson, James Edgar Standefer, James M. Burks |
2017-02-28 |
| 9181665 |
Barrier system and connector |
Barry D. Stephens |
2015-11-10 |
| 8556286 |
Towable impact attenuator |
Bret Eckert, Michael J. Buehler |
2013-10-15 |
| 8388012 |
Towable impact attenuator |
Michael J. Buehler, Bret Eckert |
2013-03-05 |
| 8348546 |
Method for transferring a barrier |
Douglas E. Wilkinson, Patrick A. Leonhardt, Michael H. Oberth, Barry D. Stephens, Sean Thompson +1 more |
2013-01-08 |
| 8136830 |
Towable impact attenuator |
Michael J. Buehler, Bret Eckert |
2012-03-20 |
| 8109692 |
Barrier transfer device, system and method for the use thereof |
Douglas E. Wilkinson, Patrick A. Leonhardt, Michael H. Oberth, Barry D. Stephens, Sean Thompson +1 more |
2012-02-07 |
| 7874572 |
Towable impact attenuator |
Michael J. Buehler, Bret Eckert |
2011-01-25 |
| 7037029 |
Crash cushion with deflector skin |
Michael J. Buehler |
2006-05-02 |
| 6942263 |
Mount for truck mounted attenuator |
Doug E. Wilkinson |
2005-09-13 |
| 6863467 |
Crash cushion with deflector skin |
Michael J. Buehler |
2005-03-08 |
| 6579034 |
Highway crash attenuator frame |
Lincoln C. Cobb |
2003-06-17 |
| 6427983 |
Self-restoring highway crash attenuator |
Patrick A. Leonhardt |
2002-08-06 |
| 6173943 |
Guardrail with slidable impact-receiving element |
Owen S. Denman |
2001-01-16 |
| 6142452 |
Highway barrier and guardrail |
Owen S. Denman, Patrick A. Leonhardt, Michael H. Oberth, Lincoln C. Cobb |
2000-11-07 |
| 5967497 |
Highway barrier and guardrail |
Owen S. Denman, Patrick A. Leonhardt, Michael H. Oberth, Lincoln C. Cobb |
1999-10-19 |
| 5425594 |
Roadside barrier |
William G. Krage, John F. LaTurner, Jeffrey M. Thompson |
1995-06-20 |
| 4583716 |
Universal anchor assembly for impact attenuation device |
Barry D. Stephens, Peter B. Morehead |
1986-04-22 |