Granted Patent
Utility
US 5,337,739 · App. 07/929,817
Disposable bacteria filter
Inventor:
Arlin Lehman
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Aug 14, 1992
Inventor
Arlin Lehman
Assignee (at issue)
Polmonary Data Service Instrumentation, 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.