Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5803279 | Automatically deployable load-line receiving mast structure for limiting deflection of proportionally extendable boom section crane | Richard J. Stallbaumer, James A. Rusk | 1998-09-08 |
| 5706960 | Extended perimeter x-shaped outrigger assembly for cranes | Richard J. Stallbaumer | 1998-01-13 |
| 5486084 | Multiple purpose material handling and working apparatus | Richard J. Stallbaumer, James A. Rusk | 1996-01-23 |
| 5012939 | Color coded boom and chart system for proportionally extensible boom assembly | Raymond J. Wacht | 1991-05-07 |
| 4459786 | Longitudinally bowed transversely polygonal boom for cranes and the like | Robert M. Bornowski | 1984-07-17 |
| 4211332 | Color coded boom and chart system | — | 1980-07-08 |