Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5295309 | Jogger/aerator | Anthony J. Trzebiatowski, Perry J. Jewell | 1994-03-22 |
| 4540539 | Method and apparatus for production of concrete pipe by the packerhead method | Gerald R. Crawford | 1985-09-10 |