Granted Patent
Utility
US 4,211,665 · App. 05/954,924
Electrical apparatus insulated with a high fire point synthetic alkylaromatic fluid
Inventor:
John P. Pellegrini, Jr.
Patented Case
View Patent ↗
Granted: Jul 8, 1980
Filed: Oct 26, 1978
Inventor
John P. Pellegrini, Jr.
Assignee (at issue)
Gulf Research & Development Company
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.