Granted Patent
Utility
US 6,696,184 · App. 09/675,771
Supported tungsten carbide material
Inventors:
Joel B. Christian, Tuan A. Dang, Robert G. Mendenhall
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Sep 29, 2000
Inventors
Joel B. Christian
Tuan A. Dang
Robert G. Mendenhall
Assignee (at issue)
OSRAM SYLVANIA 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.