Granted Patent
Utility
US 6,009,960 · App. 09/014,116
Coring tool
Inventors:
Curtis E. Leitko, Jr., Clarence D. Edmonson, Gary W. Clemens, Terry P. Clifton
Patented Case
View Patent ↗
Granted: Jan 4, 2000
Filed: Jan 27, 1998
Inventors
Curtis E. Leitko, Jr.
Clarence D. Edmonson
Gary W. Clemens
Terry P. Clifton
Assignee (at issue)
Diamond Products International, Inc.
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.