Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11261999 | Apparatus and method for retaining a noise attenuation assembly for use with a pressure regulator | Roy Ronald Pelfrey | 2022-03-01 |
| 9739408 | Noise attenuation apparatus for fluid devices | Tung K. Nguyen, Juan M. Diaz | 2017-08-22 |
| 9534725 | Noise-attenuation apparatus for pressure regulators | Roy Ronald Pelfrey, Justin Lane Masias | 2017-01-03 |