Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7585071 | Tan thru glasses | Mark W. Kroll | 2009-09-08 |
| 7540605 | Tan-through sunglasses | Mark W. Kroll | 2009-06-02 |
| 7438283 | Toddler stair safety system | Mark W. Kroll | 2008-10-21 |
| 7413302 | Tan thru glasses | Mark W. Kroll | 2008-08-19 |
| 7175271 | Tan-thru glasses | Mark W. Kroll | 2007-02-13 |
| 6854844 | Tan-thru sunglasses | Mark W. Kroll | 2005-02-15 |
| D478990 | Pacemaker | — | 2003-08-26 |
| 6578499 | Wind and insect resistant picnic system | Mark W. Kroll, Karl J. F. Kroll | 2003-06-17 |