Granted Patent
Utility
US 4,160,929 · App. 05/781,355
Incandescent light source with transparent heat mirror
Inventors:
Luke Thorington, Peter J. Walsh, Ronald C. Koo, Wolfgang E. Thouret
Patented Case
View Patent ↗
Granted: Jul 10, 1979
Filed: Mar 25, 1977
Inventors
Luke Thorington
Peter J. Walsh
Ronald C. Koo
Wolfgang E. Thouret
Assignee (at issue)
Duro-Test 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.