Granted Patent
Utility
US 6,505,480 · App. 10/114,239
Air-conditioner, outdoor unit and refrigeration unit
Inventors:
Hiroaki Tsuboe, Susumu Nakayama, Akira Saruta, Kazumoto Urata
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Apr 3, 2002
Inventors
Hiroaki Tsuboe
Susumu Nakayama
Akira Saruta
Kazumoto Urata
Assignee (at issue)
HITACHI, 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.