Granted Patent
Utility
US 6,770,848 · App. 10/115,846
Thermal warming devices
Inventors:
William Haas, William J. Haas
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Apr 3, 2002
Inventors
William Haas
William J. Haas
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.