Granted Patent
Utility
US 5,236,740 · App. 07/693,234
Methods for coating adherent diamond films on cemented tungsten carbide substrates
Inventors:
Michael G. Peters, Robert H. Cummings
Patented Case
View Patent ↗
Granted: Aug 17, 1993
Filed: Apr 26, 1991
Inventors
Michael G. Peters
Robert H. Cummings
Assignee (at issue)
National Center for Manufacturing Sciences
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.