Home › Inventors › Yen-Feng Cheng

Yen-Feng Cheng

Overall (All Time): #1,660,142 of 4,157,543Top 40%

3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5085305	Cam-operated, positive clutch with electromagnetic actuator	—	1992-02-04
5040253	Variable bed having multiple functions	—	1991-08-20
5007673	Collapsible table and chair set	—	1991-04-16