Granted Patent
Utility
US 4,284,522 · App. 06/015,608
High fire point dielectric insulating fluid having a flat molecular weight distribution curve
Inventor:
John H. Olmsted
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Feb 27, 1979
Inventor
John H. Olmsted
Assignee (at issue)
RTE 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.