Granted Patent
Utility
US 4,271,615 · App. 06/115,135
Locking device for excavating equipment
Inventor:
Larren F. Jones
Patented Case
View Patent ↗
Granted: Jun 9, 1981
Filed: Jan 24, 1980
Inventor
Larren F. Jones
Assignee (at issue)
ESCO GROUP LLC
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.