Granted Patent
Utility
US 6,055,052 · App. 09/013,146
System for, and method of, monitoring airborne particulate, including particulate of the PM.sub.2.5 class
Inventor:
Pedro Lilienfeld
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: Jan 26, 1998
Inventor
Pedro Lilienfeld
Assignee (at issue)
MIE Corporation
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.