Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6106749 | Method and machine for making concrete pipe | — | 2000-08-22 |
| 5248248 | Machine for making concrete pipes | — | 1993-09-28 |
| 5167967 | Machine for making concrete pipes | — | 1992-12-01 |
| 5147196 | Machine for making concrete pipes | — | 1992-09-15 |
| 4639342 | Combined concrete feed and packerhead lift control | — | 1987-01-27 |