Granted Patent
Utility
US 6,006,542 · App. 09/151,274
Refrigerant compressor and refrigerating apparatus
Inventors:
Kenji Tojo, Hideyuki Ueda, Yoshikatsu Tomita, Takao Mizuno
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Sep 11, 1998
Inventors
Kenji Tojo
Hideyuki Ueda
Yoshikatsu Tomita
Takao Mizuno
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.