Granted Patent
Utility
US 4,633,455 · App. 06/715,404
Headwheel for a multiple beam optical tape playback system
Inventor:
Kenneth C. Hudson
Patented Case
View Patent ↗
Granted: Dec 30, 1986
Filed: Mar 25, 1985
Inventor
Kenneth C. Hudson
Assignee (at issue)
RCA 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.