Granted Patent
Utility
US 4,434,650 · App. 06/374,999
Hydrocarbon sensor float
Inventors:
Ralph A. Perry, Raymond J. Andrejasich
Patented Case
View Patent ↗
Granted: Mar 6, 1984
Filed: May 5, 1982
Inventors
Ralph A. Perry
Raymond J. Andrejasich
Assignee (at issue)
Emhart Industries, 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.