Granted Patent
Utility
US 5,331,287 · App. 07/922,899
Device and method for sensing water and/or acid in the presence of water in non-aqueous media
Inventors:
Frederick G. Yamagishi, Camille I. Van Ast, Leroy J. Miller
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Jul 31, 1992
Inventors
Frederick G. Yamagishi
Camille I. Van Ast
Leroy J. Miller
Assignee (at issue)
Hughes Aircraft 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.