Granted Patent
Utility
US 4,464,495 · App. 06/378,378
Smoke retardant vinyl halide polymer compositions
Inventor:
Randall J. Brown
Patented Case
View Patent ↗
Granted: Aug 7, 1984
Filed: May 14, 1982
Inventor
Randall J. Brown
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.