Granted Patent
Utility
US 6,533,552 · App. 10/131,389
System and methods for controlling rotary screw compressors
Inventors:
Steven D. Centers, Paul Burrell
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Apr 23, 2002
Inventors
Steven D. Centers
Paul Burrell
Assignee (at issue)
COLTEC INDUSTRIES, 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.