Granted Patent
Utility
US 4,475,795 · App. 06/198,683
Electrochromic films having improved etch resistance
Inventors:
Marshall Leibowitz, Richard S. Crandall, Brian Wilfred Faughnan
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Oct 20, 1980
Inventors
Marshall Leibowitz
Richard S. Crandall
Brian Wilfred Faughnan
Assignee (at issue)
Timex 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.