Granted Patent
Utility
US 4,128,315 · App. 05/806,892
Thin electrochromic display
Inventor:
Louis A. Zanoni
Patented Case
View Patent ↗
Granted: Dec 5, 1978
Filed: Jun 15, 1977
Inventor
Louis A. Zanoni
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.