Granted Patent
Utility
US 4,389,765 · App. 06/260,030
Piling removal
Inventor:
Floyd M. Thompson
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: May 4, 1981
Inventor
Floyd M. Thompson
Assignee (at issue)
Crutcher Resources 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.