Granted Patent
Utility
US 6,784,990 · App. 10/407,650
Particle detection system implemented with a mirrored optical system
Inventors:
Richard K. DeFreez, James Brady, Kenneth L. Girvin
Patented Case
View Patent ↗
Granted: Aug 31, 2004
Filed: Apr 4, 2003
Inventors
Richard K. DeFreez
James Brady
Kenneth L. Girvin
Assignee (at issue)
Pacific Scientific Instruments Company
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.