Chien; Fong K.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chien; Fong K..The latest application filed is for "optical image detecting device with optical image differential capability".
- Chien; Fong K. - Chung Ho City Taipei Hsien TW
- Chien; Fong K. - Tu Cheng Hsiang Taipei Hsien TW
- Chien; Fong K. - Taipei TW
| Patent | Date |
|---|---|
| Optical image detecting device with optical image differential capability Grant 5,075,541 - Chien December 24, 1 | 1991-12-24 |
| Structure of optical mouse Grant 5,001,467 - Chien March 19, 1 | 1991-03-19 |
| Changeable input ratio mouse Grant 4,963,858 - Chien October 16, 1 | 1990-10-16 |
| Buoy structure for detecting fishing grounds Grant 4,890,334 - Chien December 26, 1 | 1989-12-26 |
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