Granted Patent
Utility
US 6,131,674 · App. 09/303,506
Gripping apparatus for resisting sliding of drilling machine
Inventors:
Robert G. Draney, Jeffrey S. Volden
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Apr 30, 1999
Inventors
Robert G. Draney
Jeffrey S. Volden
Assignee (at issue)
Case GmbH
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.