Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7340783 | Compressed air drain opening device | J. Leaphart, C. Mark Leaphart, Michael Ernst | 2008-03-11 |
| D549536 | Drain plunger | William J. Kraimer, Michael Ernst | 2007-08-28 |
| D514760 | Plunger bell | Michael Ernst | 2006-02-07 |