Granted Patent
Utility
US 5,239,170 · App. 07/781,825
Autofocus method and apparatus for imaging microscopy using a predetermined visual imaging feature
Inventor:
R. Emmett Hughlett
Patented Case
View Patent ↗
Granted: Aug 24, 1993
Filed: Oct 23, 1991
Inventor
R. Emmett Hughlett
Assignee (at issue)
Karl Suss America, Inc.
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.