Granted Patent
Utility
US 4,573,508 · App. 06/719,842
Collapsible storage tank
Inventor:
Ernest Knaus
Patented Case
View Patent ↗
Granted: Mar 4, 1986
Filed: Apr 4, 1985
Inventor
Ernest Knaus
Assignee (at issue)
Goodyear Aerospace Corporation
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.