Granted Patent
Utility
US 5,063,259 · App. 07/547,743
Clear, impact-resistant plastics
Inventors:
Robert A. Wanat, Charles C. Crabb
Patented Case
View Patent ↗
Granted: Nov 5, 1991
Filed: Jul 3, 1990
Inventors
Robert A. Wanat
Charles C. Crabb
Assignee (at issue)
Rohm and Haas 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.