Granted Patent
Utility
US 4,349,642 · App. 06/259,887
Ultraviolet radiation and impact resistant thermoplastic blends
Inventors:
Leroy J. Memering, Ervin G. Pritchett
Patented Case
View Patent ↗
Granted: Sep 14, 1982
Filed: May 4, 1981
Inventors
Leroy J. Memering
Ervin G. Pritchett
Assignee (at issue)
National Distillers and Chemical 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.