Issued Patents All Time
Showing 51–71 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6003827 | Universal sign holder | Samuel J. Bechtle, John D. McKenney | 1999-12-21 |
| 5868520 | Channelizer ballasting system using tire sidewalls | Brent M. Kulp, Samuel J. Bechtle | 1999-02-09 |
| 5836558 | Adjustable sign mounting brackets | John D. McKenney | 1998-11-17 |
| 5755528 | Unitary stabilizing base | Samuel J. Bechtle | 1998-05-26 |
| 5749673 | Stackable vertical panel | Billy E. Wehring | 1998-05-12 |
| 5732911 | Legless sign stand | Samuel J. Bechtle, Frank G. Cain | 1998-03-31 |
| 5624092 | Adjustable sign mounting brackets | John D. McKenney | 1997-04-29 |
| 5611509 | Quick release mechanism for a display stand | John D. McKenney | 1997-03-18 |
| 5560732 | Safety delineators | James P. Sullivan | 1996-10-01 |
| 5540007 | Highway signs capable of being rolled up | John D. McKenney | 1996-07-30 |
| 5446984 | Highway signs capable of being rolled up and improved mounting brackets for the signs | John D. McKenney, James P. Sullivan | 1995-09-05 |
| 5201599 | Stabilized barrel-like traffic control element | John D. McKenney, James P. Sullivan | 1993-04-13 |
| D327658 | Frame for a traffic barricade | James P. Sullivan | 1992-07-07 |
| 5026204 | Traffic control element and method of erecting and stabilizing same | John D. McKenney, James P. Sullivan | 1991-06-25 |
| 4980984 | Highway signs and flags capable of being rolled up | John D. McKenney | 1991-01-01 |
| D310642 | Traffic channelizer or the like | — | 1990-09-18 |
| D309585 | Two piece breakaway traffic channelizer | — | 1990-07-31 |
| 4859983 | Plastic barricade | Carl L. Erwin | 1989-08-22 |
| 4782783 | Traffic channelizer mountable vertical panel | Carl L. Erwin | 1988-11-08 |
| 4710053 | Traffic control elements | Richard M. Cunningham | 1987-12-01 |
| 4475101 | Traffic control device | Richard M. Cunningham | 1984-10-02 |