Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12411056 | High output acoustic system for direct field acoustic testing | Matthew Polk, Marcos A. Underwood | 2025-09-09 |
| 10014959 | Standing wave reduction in direct field acoustic testing | Paul Larkin, Matthew Polk, Dann Hayes, Arthur Isaacs | 2018-07-03 |
| 9683912 | Drive signal distribution for direct field acoustic testing | Paul Larkin, Arthur Isaacs | 2017-06-20 |
| 7757642 | Tube sheet pressure retaining plug for water tube condensers, power boilers, and heat exchangers | Mark Wayne Rettig | 2010-07-20 |
| 7487745 | Boiler tube position retainer assembly | Mark Wayne Rettig, Samuel Clifton | 2009-02-10 |
| 6442860 | Tape measure with marking device holder | William L. Williams | 2002-09-03 |
| 6244630 | Method and apparatus for non-intrusive on-line leak sealing of flanged piping connections | Johnny D. Baucom, Michael K. Phillips | 2001-06-12 |
| 4497324 | Temperature monitoring catheter | Robert L. Murtfeldt, Arthur R. Yelsey | 1985-02-05 |