Granted Patent
Utility
US 4,313,591 · App. 05/908,184
Combination top operable and bottom operable tank lading valve assembly
Inventors:
Richard J. Wempe, Gunter R. Behle
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: May 22, 1978
Inventors
Richard J. Wempe
Gunter R. Behle
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.