Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D621240 | Sheave with domed gussets | Larry Postelwait | 2010-08-10 |
| 7293763 | Retaining keeper assembly for a hoisting device | Alan C. Doughty, Paul A. Boeckman | 2007-11-13 |
| 7255330 | Field adjustable bridge crane block | Paul A. Boeckman, Alan C. Doughty | 2007-08-14 |
| 7000905 | Retaining keeper assembly for a hoisting device | Alan C. Doughty, Paul A. Boeckman | 2006-02-21 |