Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5054721 | Vertical takeoff aircraft | — | 1991-10-08 |
| 4869012 | Fishing lure | — | 1989-09-26 |
| 4693663 | Robot with articulated arm | Stephen Michael Crane, Paul M. Fischer, Kenneth V. Mattson | 1987-09-15 |
| 4661039 | Flexible-frame robot | — | 1987-04-28 |
| 4484860 | Radial tube centrifugal fan | Paul M. Fischer, Kenneth V. Mattson | 1984-11-27 |
| 4443235 | Self-cleaning cabinet dust collector | Daniel T. Risch | 1984-04-17 |
| 4438781 | Spirally wound flow control valve | — | 1984-03-27 |
| 4353587 | Transport vehicle accessory | — | 1982-10-12 |
| 4299604 | Air inducer and backwasher for an air cleaner | — | 1981-11-10 |
| 4265762 | Filter assembly for use in the filtration of medical treatment liquids | — | 1981-05-05 |
| 4214882 | Portable air filter assembly with pulse jet self-cleaning filters | — | 1980-07-29 |
| 4204846 | Self-cleaning air filter | — | 1980-05-27 |