Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348295 | Golf putter with adjustable shaft | — | 1994-09-20 |
| 5320346 | Golf putter with adjustable shaft | — | 1994-06-14 |
| D294230 | Flowmeter | Duane M. Kobos | 1988-02-16 |
| D293655 | Flowmeter | Duane M. Kobos | 1988-01-12 |
| 4559834 | Multipurpose flowmeter arrangement | Duane M. Kobos | 1985-12-24 |
| 4385525 | Strain gauge pressure transducer | Gregory J. Dirks | 1983-05-31 |
| 4297889 | Roll-up type U-tube manometer | Steven O. Buchanan | 1981-11-03 |