Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6669394 | Swing attachment | William H. Ziegler, Jr., Steven P. Hanson | 2003-12-30 |
| D477045 | Launch ramp | Frank Bork, Don R. McCloskey | 2003-07-08 |
| 6551192 | Obstacle assembly for bikes, skateboards and rollerblades | Frank Bork | 2003-04-22 |
| 6547221 | Knock-down grind rail for skateboards and rollerblades | Frank Bork | 2003-04-15 |
| 6542613 | Electronic sound generator attachment for children's slides | — | 2003-04-01 |
| 6502819 | Convertible game table | Steven P. Hanson | 2003-01-07 |