Granted Patent
Utility
US 4,249,101 · App. 05/952,267
Incandescent lamp with infrared reflecting-visible energy transmitting coating and misaligned filament
Inventor:
Peter J. Walsh
Patented Case
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Granted: Feb 3, 1981
Filed: Oct 18, 1978
Inventor
Peter J. Walsh
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.