Granted Patent
Utility
US 4,017,302 · App. 05/655,159
Tantalum metal powder
Inventors:
Victor T. Bates, Stanley S. Fry, James B. Hakko
Patented Case
View Patent ↗
Granted: Apr 12, 1977
Filed: Feb 4, 1976
Inventors
Victor T. Bates
Stanley S. Fry
James B. Hakko
Assignee (at issue)
Fansteel 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.