Granted Patent
Utility
US 5,136,202 · App. 07/576,693
Material sensor
Inventors:
Anthony Carenzo, Mary D. Kehrhahn
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Aug 31, 1990
Inventors
Anthony Carenzo
Mary D. Kehrhahn
Assignee (at issue)
Atochem North America, 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.