Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9702382 | Oil hydraulic cylinder and spindle thereof | Mike S.C. Cheng | 2017-07-11 |
| 8366077 | Jack structure for a clutch | — | 2013-02-05 |
| 8205861 | Carrying rack of an engine | — | 2012-06-26 |
| 8056575 | Check valve structure for use in pump of hydraulic cylinder | — | 2011-11-15 |
| 7171807 | Oil circuitry for two-stage telescoping transmission jack | Robert Fox | 2007-02-06 |
| 7036796 | Portable lifting jack | — | 2006-05-02 |
| 6722634 | Joint between a first cylinder and a second cylinder of a hydraulic jack to allow the second cylinder to drive the arm directly | — | 2004-04-20 |
| D480196 | Hoisting jack | — | 2003-09-30 |
| 6295812 | Hydraulic jack | — | 2001-10-02 |
| D444606 | Jack | — | 2001-07-03 |
| D429737 | Pressure pump | Min-Yuan Kuan | 2000-08-22 |
| D422284 | Air cylinder | Min-Yuan Kuan | 2000-04-04 |
| 5775672 | Release valve for lifting devices | — | 1998-07-07 |
| 5568117 | Combined electric pump and illuminating/alarm device | — | 1996-10-22 |
| 5496014 | Motorized screw jack assembly | — | 1996-03-05 |
| 5074728 | Drill-coexistent screw | — | 1991-12-24 |