Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5779282 | Exhaust ball seal | — | 1998-07-14 |
| 5720319 | Cast in joint of aluminum tailspout and stainless steel exhaust pipe | Ralph W. Smith, Lloyd Charles Kendall, David Lynn Penfield, Joel Ardon Litchfield | 1998-02-24 |