Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8555957 | Crude oil production equipment | Kuei-Hsien Shen | 2013-10-15 |
| 7795824 | Linear motor automatic control circuit assembly for controlling the operation of a 3-phase linear motor-driven submersible oil pump of an artificial oil lift system | Kuei-Hsien Shen | 2010-09-14 |
| 7699097 | Mover stabilizing and stator cooling arrangement of a 3-phase linear motor of a submersible oil pump | Kuei-Hsien Shen | 2010-04-20 |
| 4846474 | Swivel glide bar rail table for a racquet stringing machine | — | 1989-07-11 |
| 4660364 | Racket string construction | — | 1987-04-28 |