Olson; Keith D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Olson; Keith D..The latest application filed is for "protective device".
- Olson; Keith D. - Deer Park IL
- Olson; Keith D. - Elk Grove Village IL
- Olson; Keith D. - Twin Valley MN
| Patent | Date |
|---|---|
| Scissors gate valve and system water management system Grant 10,982,402 - Olson April 20, 2 | 2021-04-20 |
| Scissors gate valve and system water management system Grant 10,865,536 - Olson December 15, 2 | 2020-12-15 |
| Protective device Grant 8,151,369 - Olson April 10, 2 | 2012-04-10 |
| Protective Device App 20110167546 - Olson; Keith D. | 2011-07-14 |
| Protective device Grant 7,941,867 - Olson May 17, 2 | 2011-05-17 |
| Protective device App 20060107433 - Olson; Keith D. | 2006-05-25 |
| Folding mechanic's work dolly Grant 4,542,806 - Olson September 24, 1 | 1985-09-24 |
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