Granted Patent
Utility
US 4,460,729 · App. 06/377,922
Polyester composition
Inventor:
Jeffrey T. Books
Patented Case
View Patent ↗
Granted: Jul 17, 1984
Filed: May 13, 1982
Inventor
Jeffrey T. Books
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.