Granted Patent
Utility
US 5,664,599 · App. 08/664,123
Flow controller for a particle sensor
Inventor:
D. John Hunt
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Jun 14, 1996
Inventor
D. John Hunt
Assignee (at issue)
Met One, 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.