Granted Patent
Utility
US 6,772,607 · App. 10/278,844
Refrigerating device
Inventors:
Hiroaki Tsuboe, Susumu Nakayama, Akira Saruta, Kazumoto Urata
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Oct 24, 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.