Granted Patent
Utility
US 5,566,779 · App. 08/497,527
Insert for a drill bit incorporating a PDC layer having extended side portions
Inventor:
Thomas M. Dennis
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Jul 3, 1995
Inventor
Thomas M. Dennis
Assignee (at issue)
Dennis Tool Company
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.