Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6755590 | Box tube clamping system | Edwin J. Luetzow | 2004-06-29 |
| 6672008 | Gate release mechanism having a pivotable arm to facilitate maintenance | Edwin J. Luetzow | 2004-01-06 |
| 6597558 | Solenoid system | Edwin J. Luetzow | 2003-07-22 |
| 6470626 | Gate release mechanism with detent and plunger, and gate incorporating same | Edwin J. Luetzow | 2002-10-29 |
| 6357701 | Warning light having a switching system | Edwin J. Luetzow | 2002-03-19 |
| 6310529 | Bi-stable battery switch | Edwin J. Luetzow | 2001-10-30 |