Granted Patent
Utility
US 5,338,611 · App. 07/481,296
Method of welding thermoplastic substrates with microwave frequencies
Inventors:
Herbert J. Lause, Kristen L. Parks, Larry D. Tanis, David Leon
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Feb 20, 1990
Inventors
Herbert J. Lause
Kristen L. Parks
Larry D. Tanis
David Leon
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.