Granted Patent
Utility
US 5,013,144 · App. 07/560,489
Light source having a multiply conic lens
Inventors:
David E. Silverglate, Greg Smestad
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Jul 23, 1990
Inventors
David E. Silverglate
Greg Smestad
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.