Granted Patent
Utility
US 4,972,397 · App. 07/279,487
Dithering optical data logger
Inventors:
Larry S. Zurbrick, Robert L. Hazel
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Dec 2, 1988
Inventors
Larry S. Zurbrick
Robert L. Hazel
Assignee (at issue)
Drexler 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.