Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11982392 | Flow restriction system | — | 2024-05-14 |
| 11692660 | Mechanical plug | — | 2023-07-04 |
| 11156319 | Flow restriction system | — | 2021-10-26 |
| 11085572 | Mechanical plug | — | 2021-08-10 |
| 9611739 | Inflatable tunnel seal | — | 2017-04-04 |
| 8936045 | Dual inflatable plug assembly | — | 2015-01-20 |
| 8894115 | Inflatable lift cylinder | — | 2014-11-25 |
| 8636035 | Dual inflatable plug assembly | — | 2014-01-28 |
| 8161999 | Swing valve | — | 2012-04-24 |
| 7681591 | In-line swivel for inflatable plugs | — | 2010-03-23 |
| 7588053 | Inflatable plug with flange | — | 2009-09-15 |
| 7455077 | Inflatable plug with flange | — | 2008-11-25 |
| 6959734 | Flow-through inflatable plug | — | 2005-11-01 |
| 6899138 | Flexible emergency gas pipeline plug | — | 2005-05-31 |
| 6568429 | Pipe sealing apparatus | — | 2003-05-27 |
| 6446669 | Pipe sealing apparatus | — | 2002-09-10 |
| 5901752 | Inflatable apparatus for sealing a pipeline | — | 1999-05-11 |
| 5353842 | Inflatable plug for use in plugging a large diameter pipe | — | 1994-10-11 |
| 5201494 | Hydraulic jack and pump usable therewith | — | 1993-04-13 |
| 5170976 | Two piece loading ramp bracket | — | 1992-12-15 |
| 4796410 | Method and apparatus for shipping and storing portable automobile ramps | — | 1989-01-10 |
| 4690361 | Jack stand and method for making a jack stand | — | 1987-09-01 |
| 4565222 | Inflatable apparatus for use in plugging a large diameter pipe | — | 1986-01-21 |
| 4556163 | Method for manufacturing a jack stand | — | 1985-12-03 |