Granted Patent
Utility
US 6,447,715 · App. 09/483,073
Methods for producing medium-density articles from high-density tungsten alloys
Inventor:
Darryl D. Amick
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Jan 14, 2000
Inventor
Darryl D. Amick
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.