Granted Patent
Utility
US 4,745,474 · App. 07/040,470
Two resolution level DPCM system
Inventor:
Leonard N. Schiff
Patented Case
View Patent ↗
Granted: May 17, 1988
Filed: Apr 17, 1987
Inventor
Leonard N. Schiff
Assignee (at issue)
General Electric Company
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.