Granted Patent
Utility
US 5,207,568 · App. 07/850,504
Rotary screw compressor and method for providing thrust bearing force compensation
Inventor:
Paul G. Szymaszek
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Mar 13, 1992
Inventor
Paul G. Szymaszek
Assignee (at issue)
Vilter Manufacturing LLC
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.