Granted Patent
Utility
US 5,187,956 · App. 07/718,294
Preventing clogging in pressure diffusers
Inventors:
Joseph R. Phillips, Peter E. T. Warloff, John Hefele, Victor L. Bilodeau, Ronald Bain, Mark D. Barrett
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Jun 20, 1991
Inventors
Joseph R. Phillips
Peter E. T. Warloff
John Hefele
Victor L. Bilodeau
Ronald Bain
Mark D. Barrett
Assignee (at issue)
Kamyr, 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.