Granted Patent
Utility
US 6,652,240 · App. 09/933,061
Method and control system for controlling multiple throttled inlet rotary screw compressors
Inventor:
Ernest J. Wichert
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Aug 20, 2001
Inventor
Ernest J. Wichert
Assignee (at issue)
Scales Air Compressor
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.