Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12123551 | Portable natural gas distribution system | Kasey Noles, Steven Gillette | 2024-10-22 |
| 9534394 | Portable modular pedestrian ramp | Charles M. Mettler | 2017-01-03 |
| 9297127 | Barricade assembly with foldable legs | Charles M. Mettler | 2016-03-29 |
| 8302937 | Pedestrian barricade assembly | Charles M. Mettler | 2012-11-06 |
| 8282309 | Inertial barrier | Charles M. Mettler | 2012-10-09 |
| D665689 | Barricade panel | Charles M. Mettler | 2012-08-21 |
| 7736087 | Portable highway warning device | Charles M. Mettler | 2010-06-15 |
| 7681857 | Portable sign and barricade assemblies and plastic molded uprights and light and flag mounts therefor | Charles M. Mettler | 2010-03-23 |
| 7536973 | Plastic blow molded board-like members | Charles M. Mettler | 2009-05-26 |
| 7523715 | Portable sign and barricade assemblies and plastic molded uprights and light and flag mounts therefor | Charles M. Mettler | 2009-04-28 |
| D542685 | Inertial barrier container | Charles M. Mettler | 2007-05-15 |
| 7111815 | Base support for post or other upright | Charles M. Mettler | 2006-09-26 |
| 7059798 | Traffic channelizer devices | Charles M. Mettler | 2006-06-13 |
| 6817805 | Traffic channelizer devices | Charles M. Mettler | 2004-11-16 |
| 6769207 | Portable sign assembly | Charles M. Mettler, David E. Cowan | 2004-08-03 |
| 6733205 | Guardrail delineators | Charles D. Bailey | 2004-05-11 |
| D486250 | Base support for post or other upright | Charles M. Mettler | 2004-02-03 |
| D486089 | Traffic channelizer | Charles M. Mettler | 2004-02-03 |
| D471123 | Barricade frame | — | 2003-03-04 |
| 6182600 | Traffic channeling device | David E. Cowan, David A. Cowan | 2001-02-06 |
| D406543 | Traffic channelizer | David E. Cowan, David A. Cowan | 1999-03-09 |