Granted Patent
Utility
US 6,647,317 · App. 09/849,538
Air conditioner management system
Inventors:
Tadashi Takai, Masanori Takagi, Yukio Ito, Makoto Itoh
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: May 7, 2001
Inventors
Tadashi Takai
Masanori Takagi
Yukio Ito
Makoto Itoh
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.