Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6015452 | Method of servicing an air cleaner and of filtering engine intake air using prefilter arrangements | Larry R. Nepsund, Thomas A. Boeckermann, James K. Elfstrand | 2000-01-18 |
| D407808 | Filter element having circular sleeve | Larry R. Nepsund, Thomas A. Boeckermann, James K. Elfstrand | 1999-04-06 |
| D404807 | Filter sleeve | Larry R. Nepsund, Thomas A. Boeckermann, James K. Elfstrand | 1999-01-26 |
| 5858044 | Filter arrangement including removable filter with first and second media secured together | Larry R. Nepsund, Thomas A. Boeckermann, James K. Elfstrand | 1999-01-12 |
| D402361 | Panel filter construction | Larry R. Nepsund, Thomas A. Boeckermann, James K. Elfstrand | 1998-12-08 |
| D378744 | Restriction indicator | Thomas A. Boeckemann, James Efstrand | 1997-04-08 |