Granted Patent
Utility
US 5,194,471 · App. 07/656,538
Rigid chlorinated polyvinyl chloride compound and articles derived therefrom
Inventor:
Joachim E. Hartitz
Patented Case
View Patent ↗
Granted: Mar 16, 1993
Filed: Feb 15, 1991
Inventor
Joachim E. Hartitz
Assignee (at issue)
B. F. Goodrich Company
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.