Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8133309 | Turbomachine filter system having a drain with one-way valve | Christopher James Smith, Marcus Carr Walters | 2012-03-13 |
| 5817990 | Wall structure for sound attenuating apparatus | — | 1998-10-06 |
| 5679931 | Sound attenuating apparatus and method of forming the same | Robert A. Noreen | 1997-10-21 |
| 4693328 | Expandable well drilling tool | Praful C. Desai, Charles H. Dewey | 1987-09-15 |
| 4660657 | Underreamer | Praful C. Desai, Charles H. Dewey | 1987-04-28 |
| 4616721 | Packer Mill | — | 1986-10-14 |