Granted Patent
Utility
US 5,892,218 · App. 08/821,699
Cytological system autofocus integrity checking apparatus
Inventors:
William E. Ortyn, Jon W. Hayenga, Louis R. Piloco
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Mar 20, 1997
Inventors
William E. Ortyn
Jon W. Hayenga
Louis R. Piloco
Assignee (at issue)
Neopath, 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.