Granted Patent
Utility
US 4,339,316 · App. 06/188,985
Intermediate layer for seating RHM tubes in cathode blocks
Inventors:
Richard W. Peterson, Perry A. Foster, Jr.
Patented Case
View Patent ↗
Granted: Jul 13, 1982
Filed: Sep 22, 1980
Inventors
Richard W. Peterson
Perry A. Foster, Jr.
Assignee (at issue)
Aluminum Company of America
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.