Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5829094 | Sweeper with electromagnetic filter cleaning | Bruce F. Field, Laurence A. Jensen | 1998-11-03 |
| 5080525 | Floor paving machine and method | Alan R. Schuweiler | 1992-01-14 |
| 5081365 | Electric hybrid vehicle and method of controlling it | Bruce F. Field | 1992-01-14 |
| 4822431 | Machine and method for preparing a concrete surface for coating | Mark Snetting | 1989-04-18 |
| 4586213 | Machine for preparing a concrete surface for coating | Mark Snetting | 1986-05-06 |
| 4295274 | Scarifying machine | Ferdinand J. Herpers | 1981-10-20 |