Granted Patent
Utility
US 5,194,077 · App. 07/779,905
Dual chamber filter assembly with shaker
Inventors:
Douglas A. Bargiel, Jack L. Burgoon, Anthony P. DiGiovanni, Norbert H. Himburg
Patented Case
View Patent ↗
Granted: Mar 16, 1993
Filed: Oct 21, 1991
Inventors
Douglas A. Bargiel
Jack L. Burgoon
Anthony P. DiGiovanni
Norbert H. Himburg
Assignee (at issue)
Clarke Industries, 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.