Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4763954 | Excavator and conveyor of an underground pipeline jacking apparatus | — | 1988-08-16 |
| 4684290 | Apparatus for below-ground driving of pipeline segments | — | 1987-08-04 |
| 4630967 | Arrangement for underground advance driving of pipe trains composed of individual pipe lengths | — | 1986-12-23 |