Granted Patent
Utility
US 4,561,449 · App. 06/445,551
Auditory-evoked-action-potential-measuring system
Inventors:
Victor L. Hu, Larry W. Mauldin, John J. Lee
Patented Case
View Patent ↗
Granted: Dec 31, 1985
Filed: Nov 30, 1982
Inventors
Victor L. Hu
Larry W. Mauldin
John J. Lee
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.