Granted Patent
Utility
US 6,823,288 · App. 10/655,003
Service system for air conditioner and server system for monitoring center
Inventors:
Makoto Ito, Tadashi Takai, Tomotsune Taira, Masanori Takagi, Yukio Ito
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Sep 5, 2003
Inventors
Makoto Ito
Tadashi Takai
Tomotsune Taira
Masanori Takagi
Yukio Ito
Assignee (at issue)
Hitchi, Ltd.
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.