Granted Patent
Utility
US 4,776,322 · App. 06/898,050
Implantable electromagnetic middle-ear bone-conduction hearing aid device
Inventors:
Jack V. D. Hough, Kenneth J. Dormer, Kenneth Edward Barton, Robert Y. Chow
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Aug 18, 1986
Inventors
Jack V. D. Hough
Kenneth J. Dormer
Kenneth Edward Barton
Robert Y. Chow
Assignee (at issue)
Xomed, 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.