Granted Patent
Utility
US 4,580,478 · App. 06/577,161
Musical keyboard using planar coil arrays
Inventors:
Amnon Brosh, David Fiori, Jr.
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Feb 6, 1984
Inventors
Amnon Brosh
David Fiori, Jr.
Assignee (at issue)
Bitronics, 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.