Granted Patent
Utility
US 4,014,722 · App. 05/480,438
Method of making electric conductor
Inventor:
Lawrence Robert Deardurff
Patented Case
View Patent ↗
Granted: Mar 29, 1977
Filed: Jun 17, 1974
Inventor
Lawrence Robert Deardurff
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.