Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6550581 | Wire rope lubrication device for a crane | Paul John Berbakov, Steven Paul Clark, Edward Stephen Robitz | 2003-04-22 |
| 6547039 | Wire rope lubrication device for a crane | Paul John Berbakov, Steven Paul Clark, Edward Stephen Robitz | 2003-04-15 |
| 6446756 | Wire rope lubrication device for a crane | Paul John Berbakov, Steven Paul Clark, Edward Stephen Robitz | 2002-09-10 |
| 5951227 | Deep water lowering apparatus | Dennis E. Calkins, James Joseph Toups, Kevin Patrick Zaeringer | 1999-09-14 |