Granted Patent
Utility
US 4,728,677 · App. 06/868,857
Weatherable vinyl polymer compositions
Inventors:
Emilia E. Lacatus, Elvira B. Rabinovitch, James W. Summers
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: May 30, 1986
Inventors
Emilia E. Lacatus
Elvira B. Rabinovitch
James W. Summers
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.