Granted Patent
Utility
US 6,498,641 · App. 09/872,741
Condensation nucleus counter with multi-directional fluid flow system
Inventor:
Frederic Schildmeyer
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Jun 1, 2001
Inventor
Frederic Schildmeyer
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.