Granted Patent
Utility
US 6,799,648 · App. 10/229,192
Method of producing downhole drill bits with integral carbide studs
Inventors:
Kristin Brandenberg, John R. Keough, Kathy L. Hayrynen, Gerald Wurtsmith
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Aug 27, 2002
Inventors
Kristin Brandenberg
John R. Keough
Kathy L. Hayrynen
Gerald Wurtsmith
Assignee (at issue)
Applied Process, 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.