Granted Patent
Utility
US 6,612,445 · App. 09/821,814
Industrial filter with arrangement for removing machining chips from coolant prior to filtering
Inventor:
Jack R. Bratten
Patented Case
View Patent ↗
Granted: Sep 2, 2003
Filed: Mar 29, 2001
Inventor
Jack R. Bratten
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.