Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5497735 | Internal combustion engine for portable power generating equipment | Robert D. Kern, Gerald C. Ruehlow, Herb Hoenisch | 1996-03-12 |
| 5317999 | Internal combustion engine for portable power generating equipment | Robert D. Kern, Gerald C. Ruehlow, Herb Hoenisch | 1994-06-07 |