Issued Patents All Time
Showing 451–475 of 555 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5105125 | Device for alternating bulb polarities of a DC lighting system | — | 1992-04-14 |
| 5090670 | Forcible type C-type clamp with pre-stress packing face | — | 1992-02-25 |
| 5072160 | Device for periodically alternating bulb polarities of a DC fluorescent lighting system | — | 1991-12-10 |
| 5048808 | Clamping devices for irregular shaped workpieces | — | 1991-09-17 |
| 5015928 | Universal series motor with speed limiting circuit to protect the motor from overspeeding during relatively-small loads | — | 1991-05-14 |
| 5002443 | Structural improvement for main shaft of ram type tooling machine | — | 1991-03-26 |
| 5003439 | Low-voltage bar-shape indicating lamp for outdoor purpose | — | 1991-03-26 |
| 4994727 | Charging circuitry having polarity detecting protection | — | 1991-02-19 |
| 4993138 | Tool milling machine or the like type complex processing machine | — | 1991-02-19 |
| 4976173 | Manual electric tool | — | 1990-12-11 |
| 4971301 | Vise | — | 1990-11-20 |
| 4969638 | Improvement on sliding claw and coupling structure | — | 1990-11-13 |
| 4962918 | Clamping set having double-coordinate clamping function and being extensible for adjusting clamp depth | — | 1990-10-16 |
| 4962583 | Tunnel type or dragon-gate type processing system assembled with selected elements and its related interface means | — | 1990-10-16 |
| 4962681 | Modular manual electric appliance | — | 1990-10-16 |
| 4955593 | Position and angle of polar coordinate adjustable vice | — | 1990-09-11 |
| 4933800 | Motor overload detection with predetermined rotation reversal | — | 1990-06-12 |
| 4925158 | Detachable motor/air pump unit for a hydraulic jack adaptable for lifting and pumping functions | — | 1990-05-15 |
| 4926307 | Polyphase a.c. motor supplied with power via d.c. power supply | — | 1990-05-15 |
| 4895117 | Internal combustion engine | — | 1990-01-23 |
| 4864177 | Stator lamination design for two-pole single-phase induction motor | — | 1989-09-05 |
| 4858571 | Liquid pump driven by a two-cycle, dual piston internal combustion engine | — | 1989-08-22 |
| 4855662 | Charging circuitry having polarity detecting protection | — | 1989-08-08 |
| 4851738 | Lighting system having photosensing timing switch circuit | — | 1989-07-25 |
| 4851747 | Non-precise heat control operation periodic positive & reverse circulating fan | — | 1989-07-25 |