Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11737508 | Pressure relief system for footwear | Roy Herman Lidtke | 2023-08-29 |
| 11033069 | Pressure relief system for footwear | Roy Herman Lidtke | 2021-06-15 |
| 10349699 | Pressure relief system for footwear | Roy Herman Lidtke | 2019-07-16 |
| 9386820 | Pressure relief system for footwear | Roy Herman Lidtke | 2016-07-12 |
| 7165522 | Cylinder head of an internal combustion engine having a camshaft bearing rail | Georg Malek, Doris Schiecke, Axel Temmesfeld | 2007-01-23 |
| 6616453 | Remote certification of workers for multiple worksites | Don M. Kouba | 2003-09-09 |
| 6325631 | Remote certification of workers for multiple worksites | Don M. Kouba | 2001-12-04 |