Granted Patent
Utility
US 4,602,048 · App. 06/799,942
Aryloxy-alkoxy-allylphenoxy substituted polyphosphazenes
Inventors:
Harold R. Penton, F. Alexander Pettigrew
Patented Case
View Patent ↗
Granted: Jul 22, 1986
Filed: Nov 20, 1985
Inventors
Harold R. Penton
F. Alexander Pettigrew
Assignee (at issue)
Ethyl 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.