Granted Patent
Utility
US 5,902,998 · App. 08/876,303
Apparatus and method for detecting an object using digitally encoded optical signals
Inventors:
Gary Olson, Eardley L. Ham, Andrew J. Pichotta
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Jun 16, 1997
Inventors
Gary Olson
Eardley L. Ham
Andrew J. Pichotta
Assignee (at issue)
Control Products, 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.