Granted Patent
Utility
US 4,351,160 · App. 06/159,572
Capacity control systems for screw compressor based water chillers
Inventors:
Kenneth J. Kountz, Richard A. Erth
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Jun 16, 1980
Inventors
Kenneth J. Kountz
Richard A. Erth
Assignee (at issue)
BorgWarner Inc.
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.