Granted Patent
Utility
US 4,547,641 · App. 06/463,029
Method for dielectrically joining tubular members
Inventors:
Perry A. Nebergall, Robert C. French
Patented Case
View Patent ↗
Granted: Oct 15, 1985
Filed: Feb 1, 1983
Inventors
Perry A. Nebergall
Robert C. French
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.