Granted Patent
Utility
US 4,831,443 · App. 07/094,221
Wide band VCR with comb filter inhibition
Inventor:
Steven J. Heinz
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Sep 8, 1987
Inventor
Steven J. Heinz
Assignee (at issue)
Zenith Electronics LLC
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.