Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10328538 | Rotary positioner with outriggers | Gary Tsui | 2019-06-25 |
| 9254987 | Tower erection lift kit tools | — | 2016-02-09 |
| 8596700 | Tower erection lift kit tools | — | 2013-12-03 |
| 8596701 | Anchor hoist ring assembly | — | 2013-12-03 |
| 8562053 | Hoist ring assembly and method | Bernard J. Davidson | 2013-10-22 |
| 8388034 | Lift stub | — | 2013-03-05 |
| 8113734 | Fixed eyebolt assembly and inventory thereof | Phil Stranahan | 2012-02-14 |
| 7783519 | Fixed eyebolt inventory control method | Phil Stranahan | 2010-08-24 |
| 7575262 | Quick release dovetail lift coupling | Christian Volz | 2009-08-18 |
| 7513168 | Jack bolt activated tensile strength test machine | — | 2009-04-07 |
| D542505 | Side pull hoist ring | — | 2007-05-08 |
| 7114872 | Wrenchless hoist ring mounting | — | 2006-10-03 |
| 6957585 | Thread wear gauge for coil threads | — | 2005-10-25 |
| 6953212 | Weld mount hoist ring | — | 2005-10-11 |
| 6267422 | Side mount hoist ring | — | 2001-07-31 |
| 6199925 | High load capacity hoist ring | — | 2001-03-13 |
| 5979954 | Safety hoist ring | Gary Tsui | 1999-11-09 |
| 5848815 | Safety hoist ring | Gary Tsui | 1998-12-15 |
| 5746552 | Adjustable drill bushing | Gary Tsui, James Tran | 1998-05-05 |