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Patent applications and USPTO patent grants for Feng; Yee-Chang.The latest application filed is for "clean energy generation system".
Patent | Date |
---|---|
Clean energy generation system Grant 9,255,493 - Feng , et al. February 9, 2 | 2016-02-09 |
Clean energy generation system App 20150337676 - FENG; YEE-CHANG ;   et al. | 2015-11-26 |
Screwdriver with slidably stored tool head module Grant 5,517,885 - Feng May 21, 1 | 1996-05-21 |
Exchangeable type screwdriver with work-head storage module(s) Grant 5,499,562 - Feng March 19, 1 | 1996-03-19 |
Tool box Grant D323,936 - Feng February 18, 1 | 1992-02-18 |
Combined vernier gauge and protractor Grant 5,084,982 - Feng February 4, 1 | 1992-02-04 |
Multi-storied tool box Grant 5,083,664 - Feng January 28, 1 | 1992-01-28 |
Tool box Grant 5,029,707 - Feng July 9, 1 | 1991-07-09 |
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