Granted Patent
Utility
US 6,408,645 · App. 09/925,540
Air-conditioner, outdoor unit and refrigeration unit
Inventors:
Hiroaki Tsuboe, Susumu Nakayama, Akira Saruta, Kazumoto Urata
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Aug 10, 2001
Inventors
Hiroaki Tsuboe
Susumu Nakayama
Akira Saruta
Kazumoto Urata
Assignee (at issue)
Hitachi Air Conditioning Systems Co., 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.