Granted Patent
Utility
US 4,575,660 · App. 06/526,321
Lighting scene control panel and control circuit
Inventors:
Walter S. Zaharchuk, Joel S. Spira
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: Aug 25, 1983
Inventors
Walter S. Zaharchuk
Joel S. Spira
Assignee (at issue)
Lutron Electronics Co., Inc.
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.