Granted Patent
Utility
US 6,389,827 · App. 09/750,041
Heat source apparatus of ice storage type
Inventors:
Masanori Agekura, Mitsugu Aoyama, Kenji Takagi, Ken Kaneko, Akira Mishima
Patented Case
View Patent ↗
Granted: May 21, 2002
Filed: Dec 29, 2000
Inventors
Masanori Agekura
Mitsugu Aoyama
Kenji Takagi
Ken Kaneko
Akira Mishima
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.