Granted Patent
Utility
US 5,841,538 · App. 08/677,785
Apparatus for detecting a polarization altering substance on a surface
Inventors:
Daniel Schoeffler, Howard Stern, Pat V. Costa
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Jul 10, 1996
Inventors
Daniel Schoeffler
Howard Stern
Pat V. Costa
Assignee (at issue)
Robotic Vision Systems, 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.