Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6158152 | Pneumatic excavator | Richard D. Nathenson, Paul M. Brumbaugh, Martin Uram | 2000-12-12 |
| 5966847 | Pneumatic excavator | Richard D. Nathenson, Paul M. Brumbaugh, Martin Uram | 1999-10-19 |
| 5860232 | Mobile safe excavation system having a deflector plate and vacuum source | Richard D. Nathenson, Paul M. Brumbaugh | 1999-01-19 |
| 5487229 | Apparatus for pneumatic excavation | Richard D. Nathenson, Martin Uram, Paul M. Brumbaugh, Gary H. Brawley, Donald J. Hackman +1 more | 1996-01-30 |
| 4323280 | Remote controlled high wall coal mining system | John B. Lansberry, Joseph D. Dury, Jr. | 1982-04-06 |