Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10427581 | Trailer for loading and unloading heat exchanger tube bundles | — | 2019-10-01 |
| 9764676 | Trailer for loading and unloading heat exchanger tube bundles | — | 2017-09-19 |
| 8177243 | Load-transferring trailer assembly attachable to a load-bearing vehicle | Howard Lefler | 2012-05-15 |
| RE36465 | Furnace cleaning apparatus | — | 1999-12-28 |
| 5588593 | Safety apparatus for high pressure liquid jet system | — | 1996-12-31 |
| 5582349 | Hydroblasting spray gun having an on/off safety switch system | — | 1996-12-10 |
| 5535949 | Safety switch system for hydroblasting operations | — | 1996-07-16 |
| 5381811 | Furnace cleaning apparatus | — | 1995-01-17 |
| 5203072 | Detachable crane- or boom-operated heat exchanger tube bundle extractor | — | 1993-04-20 |
| 5169281 | Detachable crane- or boom-operated heat exchanger tube bundle extractor | — | 1992-12-08 |
| 5160548 | Method for cleaning tube bundles using a slurry | — | 1992-11-03 |
| 5129455 | Multi-lance tube cleaning system having flexible portions | — | 1992-07-14 |
| 5067558 | Multi-lance tube cleaning system | — | 1991-11-26 |
| 5031691 | Multi-lance tube cleaning system having sliding plate | — | 1991-07-16 |
| 5022463 | Multi-hose flexible lance tube cleaning system | — | 1991-06-11 |
| 5018544 | Apparatus for cleaning heat exchanger tube bundles | Larry D. McGrew, James D. Jeffrey, Robert G. Wetzel, Gene P. Livingston, Robert Allen Baten | 1991-05-28 |
| 5002120 | Multi-lance tube cleaning system | Larry D. McGrew, James D. Jeffrey, Gene P. Livingston | 1991-03-26 |