Granted Patent
Utility
US 4,643,937 · App. 06/706,289
Laminate formed from a polyarylate sheet and a polycarbonate and/or polyester sheet
Inventors:
Barry L. Dickinson, Lloyd M. Robeson, Marvin E. Sauers
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Feb 27, 1985
Inventors
Barry L. Dickinson
Lloyd M. Robeson
Marvin E. Sauers
Assignee (at issue)
Union Carbide 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.