TC

Tzu-Keng Cheng

Overall (All Time): #428,157 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
D419893 Ear thermometer 2000-02-01
5807287 Massaging apparatus with audio signal control 1998-09-15
D363994 Combined acupuncture and vibrating massager 1995-11-07
5336159 Infrared massager 1994-08-09
D346449 Massager 1994-04-26
D344614 Water cleaning device 1994-02-22
D342319 Massager 1993-12-14
D333912 Suitcase 1993-03-16
5140976 Massager with mercury switch 1992-08-25
D328343 Air cleaner 1992-07-28
D323301 Rotating axis marking unit for golf ball 1992-01-21
D319105 Massager 1991-08-13