Granted Patent
Utility
US 5,468,645 · App. 08/097,112
Method for real-time colorimetric measurement of exposure to airborne pollutants
Inventors:
Kirollos Salama Kirollos, Gueorgui M. Mihaylov, Kevin L. Lockerby, Roman A. Stobnicki
Patented Case
View Patent ↗
Granted: Nov 21, 1995
Filed: Jul 26, 1993
Inventors
Kirollos Salama Kirollos
Gueorgui M. Mihaylov
Kevin L. Lockerby
Roman A. Stobnicki
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.