Granted Patent
Utility
US 4,764,535 · App. 06/637,718
Thermally applied sealants and process
Inventor:
Larry F. Leicht
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Aug 6, 1984
Inventor
Larry F. Leicht
Assignee (at issue)
QSO 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.