Elfstrand; James K.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Elfstrand; James K..The latest application filed is for "air cleaner; method and use".
- Elfstrand; James K. - Mounds View MN
| Patent | Date |
|---|---|
| Air cleaner; method and use Grant 6,340,375 - DePietro, III , et al. January 22, 2 | 2002-01-22 |
| Air cleaner; method and use Grant 6,059,851 - DePietro, III , et al. May 9, 2 | 2000-05-09 |
| Method of servicing an air cleaner and of filtering engine intake air using prefilter arrangements Grant 6,015,452 - Nepsund , et al. January 18, 2 | 2000-01-18 |
| Air cleaner Grant D418,592 - DePietro, III , et al. January 4, 2 | 2000-01-04 |
| Filter element having circular sleeve Grant D407,808 - Nepsund , et al. April 6, 1 | 1999-04-06 |
| Filter sleeve Grant D404,807 - Nepsund , et al. January 26, 1 | 1999-01-26 |
| Filter arrangement including removable filter with first and second media secured together Grant 5,858,044 - Nepsund , et al. January 12, 1 | 1999-01-12 |
| Panel filter construction Grant D402,361 - Nepsund , et al. December 8, 1 | 1998-12-08 |
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