Granted Patent
Utility
US 4,882,687 · App. 06/846,657
Pixel processor
Inventor:
Dorothy Gordon
Patented Case
View Patent ↗
Granted: Nov 21, 1989
Filed: Mar 31, 1986
Inventor
Dorothy Gordon
Assignee (at issue)
Schlumberger Technology 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.