Granted Patent
Utility
US 4,345,817 · App. 06/155,903
Wide angle display device
Inventor:
Eric C. Gwynn
Patented Case
View Patent ↗
Granted: Aug 24, 1982
Filed: Jun 2, 1980
Inventor
Eric C. Gwynn
Assignee (at issue)
The Singer Company Limited
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.