Granted Patent
Utility
US 6,361,739 · App. 09/782,341
Fabrication process for high density powder composite hardfacing rod
Inventors:
Harold A. Sreshta, Eric F. Drake
Patented Case
View Patent ↗
Granted: Mar 26, 2002
Filed: Feb 13, 2001
Inventors
Harold A. Sreshta
Eric F. Drake
Assignee (at issue)
Schlumberger Technology Corporation
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.