Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10569138 | Ascender device and method of use | — | 2020-02-25 |
| 9908749 | Block | Kenneth E. Lange | 2018-03-06 |
| 9217424 | Multi-speed hydraulic pump | William C. Ottemann, Joseph R. Young | 2015-12-22 |
| 7494110 | Arrangement for lifting and lowering objects | Paul Vanden Heuvel | 2009-02-24 |
| 6685171 | Lifting device | John S. Millman | 2004-02-03 |
| 6361022 | Lifting device | John S. Millman | 2002-03-26 |
| 6305669 | Bearing block tether using fine lines | Olaf T. Harken, Kenneth E. Lange, Thomas G. Hanson | 2001-10-23 |
| 6247847 | Flexible bearing cage | — | 2001-06-19 |
| 5489254 | Thrust bearing feature for side plate of bearing block | — | 1996-02-06 |
| 5485800 | Resilient stand-up device for bearing block | — | 1996-01-23 |
| 5462368 | Ball bearing block having self-contained bearings | — | 1995-10-31 |
| 5449154 | Bearing assembly for rotary support of a line | — | 1995-09-12 |