Granted Patent
Utility
US 4,246,150 · App. 06/076,524
Lubricant for heat processing of vinyl chloride resins
Inventor:
J. David Bower
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Sep 17, 1979
Inventor
J. David Bower
Assignee (at issue)
American Hoechst 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.