Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368656 | Steel spring and method for producing same | William E. Heitmann, Prabhat K. Rastogi | 1994-11-29 |
| 5282906 | Steel bar and method for producing same | William E. Heitmann, Prabhat K. Rastogi | 1994-02-01 |