Granted Patent
Utility
US 5,345,666 · App. 08/106,125
Method of sealing a tank having a flexible sheet liner therein
Inventor:
Ronald M. Matyja
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Aug 12, 1993
Inventor
Ronald M. Matyja
Assignee (at issue)
CULLIGAN INTERNATIONAL COMPANY
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.