Granted Patent
Utility
US 4,393,889 · App. 06/244,532
Fire-safe valve structure
Inventors:
Scott W. Binegar, Hamid J. Saka
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Mar 17, 1981
Inventors
Scott W. Binegar
Hamid J. Saka
Assignee (at issue)
ACF Industries Incorporated
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.