Granted Patent
Utility
US 4,312,802 · App. 05/829,411
Polymer compositions and articles therefrom
Inventor:
Harry D. Anspon
Patented Case
View Patent ↗
Granted: Jan 26, 1982
Filed: Aug 31, 1977
Inventor
Harry D. Anspon
Assignee (at issue)
United States Steel 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.