Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8720897 | Timer controlled building and demolition game apparatus | Stephen W. Butcher, Dustin DePenning, Lee M. Lenkarski | 2014-05-13 |
| 7985137 | Hand-held electronic game device | Daniel B. Klitsner | 2011-07-26 |
| 7819404 | Board game with tower and collapsing stairs | William Nelson Addison Creech, Lee M. Lenkarski, Andrew Lage | 2010-10-26 |