Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6079441 | Adjustable electronic position indicator apparatus | Wayne R. Houck, Ronald G. Butler, John R. Lehman | 2000-06-27 |
| 5649567 | Sealing arrangement, for use with, and in combination with, a steam and fuel oil control and furge valve, and a valve seat therefor | Ronald G. Butler, Wayne R. Houck, John R. Lehman | 1997-07-22 |