Granted Patent
Utility
US 4,140,862 · App. 05/759,949
Salts of diamines and tetrahalophthalates
Inventors:
Anderson O. Dotson, Jr., Francis T. Wadsworth, Lionel T. Wolford
Patented Case
View Patent ↗
Granted: Feb 20, 1979
Filed: Jan 17, 1977
Inventors
Anderson O. Dotson, Jr.
Francis T. Wadsworth
Lionel T. Wolford
Assignee (at issue)
Cities Service Co.
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.