Granted Patent
Utility
US 4,388,898 · App. 06/268,570
Oil containment device
Inventor:
Wally M. Larson
Patented Case
View Patent ↗
Granted: Jun 21, 1983
Filed: May 29, 1981
Inventor
Wally M. Larson
Assignees (at issue)
Ronald Luttrell
Gerald Edson
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.