| 7222691 |
Work vehicle door interlock with override position |
Troy Menebroker |
2007-05-29 |
| 6814161 |
Stakedown assembly for a horizontal directional drill |
Donald C. Sassor, Jeffrey S. Volden |
2004-11-09 |
| 6371683 |
Stakedown assembly coupling for a horizontal directional drill |
Jeffrey S. Volden |
2002-04-16 |
| 6276464 |
Stake coupler for a horizontal directional drill |
Donald C. Sassor, Jeffrey S. Volden |
2001-08-21 |
| 6257350 |
Multiple position staking system for a horizontal directional drill |
Donald C. Sassor, Dmitry Spivak, Jeffrey S. Volden |
2001-07-10 |
| 6237703 |
Pipe cartridge for a horizontal directional drill |
Christopher G. Kay, Jeffrey S. Volden |
2001-05-29 |
| 6216797 |
Thrust system for a horizontal directional drill |
Willie J. Lessard |
2001-04-17 |
| 6131674 |
Gripping apparatus for resisting sliding of drilling machine |
Jeffrey S. Volden |
2000-10-17 |
| 5820332 |
Heavy duty coupler for attaching an implement to work vehicle |
Mark Samuel Philips, Stephen A. Youngers, Kenneth W. Johnston, Mike E. Delaney, Charles B. Hanson +1 more |
1998-10-13 |
| 5482121 |
Vibratory cable plow assembly |
James W. Donoghue, Mark D. Bird, David W. Beatenbough |
1996-01-09 |
| 5228221 |
Boom assembly for a trencher machine |
Randy H. Hillard, Stephen A. Youngers |
1993-07-20 |
| 5212896 |
Control system for a walk behind trencher machine |
Randy H. Hillard, Howard A. Zimmerman, Virgil J. Hill |
1993-05-25 |
| 4861195 |
Cable plow chute |
Randy H. Hillard, Joseph J. Lesher |
1989-08-29 |
| 4650370 |
High-speed cable-laying apparatus |
Harry W. Kassner, Stephen A. Youngers |
1987-03-17 |
| 4588034 |
Vibratory plow blade |
Emil T. Leonard |
1986-05-13 |
| 4553448 |
Dual-rate control assembly |
Stephen A. Youngers |
1985-11-19 |
| 4377914 |
Vertical lift and blade control mechanism for cable plows |
Howard A. Zimmerman |
1983-03-29 |