Granted Patent
Utility
US 5,565,984 · App. 08/489,430
Re-entrant illumination system for particle measuring device
Inventor:
Kenneth L. Girvin
Patented Case
View Patent ↗
Granted: Oct 15, 1996
Filed: Jun 12, 1995
Inventor
Kenneth L. Girvin
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.