Granted Patent
Utility
US 5,351,848 · App. 08/115,816
Peripheral seal device for floating tank cover
Inventor:
Robert B. Wagoner
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: Sep 3, 1993
Inventor
Robert B. Wagoner
Assignee (at issue)
Matrix Service 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.