Granted Patent
Utility
US 4,870,613 · App. 07/142,753
Method for interactively changing video disks
Inventors:
William L. Clinkenbeard, James G. Lea
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Jan 11, 1988
Inventors
William L. Clinkenbeard
James G. Lea
Assignee (at issue)
Cincinnatti Milacron 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.