Granted Patent
Utility
US 6,135,145 · App. 09/090,755
Valve and filtration arrangement for polymer processing system
Inventor:
Michael G. Bolling
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Jun 4, 1998
Inventor
Michael G. Bolling
Assignee (at issue)
Maag Pump Systems Textron AG
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.