Granted Patent
Utility
US 6,247,645 · App. 09/237,143
Optical reader with combined housing and light pipe
Inventors:
Richard H. Harris, Robert W. Kruppa
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Jan 25, 1999
Inventors
Richard H. Harris
Robert W. Kruppa
Assignee (at issue)
International Business Machines 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.