Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7125239 | Concrete pipe manufacturing machinery and methods | Byron Hilts | 2006-10-24 |
| 5433523 | Vibrators | — | 1995-07-18 |
| 5364578 | Combination counter rotating packerhead and vibrator assembly and method of operation thereof | — | 1994-11-15 |
| 5139404 | Apparatus for making lined pipe | — | 1992-08-18 |
| 5028368 | Method of forming lined pipe | — | 1991-07-02 |
| 4861252 | Vibrator type concrete pipe making machines having combined lubrication and cooling system | — | 1989-08-29 |