Granted Patent
Utility
US 4,440,379 · App. 06/369,043
Bottom operator for top operated bottom installed tank car valve assembly
Inventors:
Gunter R. Behle, David P. Hillstead
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Apr 16, 1982
Inventors
Gunter R. Behle
David P. Hillstead
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.