Granted Patent
Utility
US 6,206,653 · App. 09/204,868
Internal oil filter element for refrigeration compressor
Inventors:
Randy E. Dewhirst, James W. Noben
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Dec 3, 1998
Inventors
Randy E. Dewhirst
James W. Noben
Assignee (at issue)
American Standard 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.