Granted Patent
Utility
US 4,797,442 · App. 07/109,683
Melt processable CPVC blends and alloys thereof
Inventor:
Richard C. Neuman
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Oct 19, 1987
Inventor
Richard C. Neuman
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.