Granted Patent
Utility
US 4,812,142 · App. 07/127,086
Colored polycarbonate articles with high impact resistance
Inventor:
George L. Brodmann
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Dec 1, 1987
Inventor
George L. Brodmann
Assignee (at issue)
Burlington Industries LLC
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.