Granted Patent
Utility
US 4,656,521 · App. 06/718,581
Digital distortion-correcting circuit for projection a flat image on a curved screen from a digital data source for a simulator projected-image visual system
Inventors:
John R. Trzeciak, James A. Turner
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Apr 1, 1985
Inventors
John R. Trzeciak
James A. Turner
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.