Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4769897 | Method for forming a press-fitted pipe joint | — | 1988-09-13 |
| 4575335 | Apparatus and method for heating an air stream flowing through a conduit | Thomas Hirt | 1986-03-11 |
| 4442697 | Pre-stressed impact testing device | Brian L. Jones, David L. Johnson | 1984-04-17 |
| 4387593 | Powder level measurement probe | — | 1983-06-14 |
| 4278788 | Removal of residual catalyst from polyolefin polymers | James R. Hatfield, James Graham, Thomas Hirt | 1981-07-14 |