Granted Patent
Utility
US 6,516,229 · App. 09/449,241
Personal therapeutic device using far infrared radiation
Inventor:
Albert Chin-Tang Wey
Patented Case
View Patent ↗
Granted: Feb 4, 2003
Filed: Nov 24, 1999
Inventor
Albert Chin-Tang Wey
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.