Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4421170 | Method and apparatus for quick replacement of cartridge filters used in well fluid cleaning operations | Edward R. Swift, Jr. | 1983-12-20 |
| 4295525 | Method and apparatus for quick replacement of cartridge filters used in well fluid cleaning operations | Edward R. Swift, Jr. | 1981-10-20 |