Granted Patent
Utility
US 5,530,940 · App. 08/382,746
Coupling device for light pipe system
Inventors:
Edward G. Ludwig, Jr., Harry J. Lunnemann
Patented Case
View Patent ↗
Granted: Jun 25, 1996
Filed: Feb 2, 1995
Inventors
Edward G. Ludwig, Jr.
Harry J. Lunnemann
Assignee (at issue)
Rohm and Haas Company
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.