Granted Patent
Utility
US 5,947,587 · App. 08/943,310
Signal lamp with LEDs
Inventors:
Matthijs Keuper, Antonius J. M. Van Hees
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Oct 14, 1997
Inventors
Matthijs Keuper
Antonius J. M. Van Hees
Assignee (at issue)
U.S. Philips 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.