Granted Patent
Utility
US 6,098,421 · App. 09/187,349
Refrigerating apparatus
Inventors:
Makoto Fujita, Yoshikazu Amo
Patented Case
View Patent ↗
Granted: Aug 8, 2000
Filed: Nov 6, 1998
Inventors
Makoto Fujita
Yoshikazu Amo
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.