Granted Patent
Utility
US 4,460,929 · App. 06/472,071
Noise cancelling system for low frequency analog recording
Inventor:
Clifford J. Bader
Patented Case
View Patent ↗
Granted: Jul 17, 1984
Filed: Mar 4, 1983
Inventor
Clifford J. Bader
Assignee (at issue)
Burroughs, 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.