Granted Patent
Utility
US 4,241,683 · App. 05/913,956
Liquid cargo tank construction
Inventor:
Charles S. Conway
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Jun 9, 1978
Inventor
Charles S. Conway
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.