Granted Patent
Utility
US 6,410,085 · App. 09/682,425
Method of machining of polycrystalline diamond
Inventors:
Nigel Dennis Griffin, Peter Raymond Hughes
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Aug 31, 2001
Inventors
Nigel Dennis Griffin
Peter Raymond Hughes
Assignee (at issue)
Camco International (UK) Limited
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.