Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10422120 | Forward articulating cleaning and removal apparatus and method | — | 2019-09-24 |
| 9651167 | Trenchless drainage structure replacement | — | 2017-05-16 |
| 9650557 | Green directional drilling fluid composition | — | 2017-05-16 |
| 9290993 | Method and system for installation of in-ground conduit | J. Dana Pruhs | 2016-03-22 |
| 8556539 | Trenchless drainage structure replacement | — | 2013-10-15 |
| 8545130 | Wick assembly and method for installing an underdrain | — | 2013-10-01 |
| 8347446 | Drainage structure cleaning tool | — | 2013-01-08 |
| 8303215 | Wick assembly and method for installing an underdrain | — | 2012-11-06 |
| 7725978 | Drainage structure cleaning apparatus | — | 2010-06-01 |
| 7721375 | Drainage structure cleaning tool | — | 2010-05-25 |
| 7398785 | Method for cleaning a culvert | — | 2008-07-15 |
| 6647182 | Echelle grating dense wavelength division multiplexer/demultiplexer | Andrew D. Sappey, Pei Huang, Gerry Murphy | 2003-11-11 |
| 6421479 | Apparatus and method facilitating optical alignment of a bulk optical multiplexer/demultiplexer | — | 2002-07-16 |
| 5993137 | Adjustable hoist for use with vehicle | — | 1999-11-30 |