Granted Patent
Utility
US 4,293,433 · App. 06/155,070
Perchloroethylene dielectric fluid containing pyrrole and phenol
Inventors:
Jack A. Borror, Edward A. Rowe
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Jun 2, 1980
Inventors
Jack A. Borror
Edward A. Rowe
Assignee (at issue)
Diamond Shamrock 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.