Granted Patent
Utility
US 4,603,158 · App. 06/655,845
Optically transparent elastomers
Inventors:
Richard L. Markham, William J. Mueller
Patented Case
View Patent ↗
Granted: Jul 29, 1986
Filed: Sep 28, 1984
Inventors
Richard L. Markham
William J. Mueller
Assignee (at issue)
Battelle Development 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.