Granted Patent
Utility
US 4,348,235 · App. 06/163,818
Stop-leak composition for automobile cooling systems and the like
Inventors:
Tull C. Lasswell, John L. Monier
Patented Case
View Patent ↗
Granted: Sep 7, 1982
Filed: Jun 27, 1980
Inventors
Tull C. Lasswell
John L. Monier
Assignee (at issue)
Tri-X Corporation
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.