Granted Patent
Utility
US 6,217,639 · App. 09/183,322
Contamination control breather
Inventor:
Ronald R. Jackson
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Oct 30, 1998
Inventor
Ronald R. Jackson
Assignee (at issue)
Fluid Protection Corporation
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.