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Si-Ling Ts'ao

Overall (All Time): #1,667,769 of 4,157,543Top 45%

3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4924626	Device for automatically opening and closing a door	—	1990-05-15
4421269	System for control of water temperature	—	1983-12-20
4275273	Telephone index for repertory dialer	—	1981-06-23