IP Library › Granted Patent US 5,591,157
Granted Patent Utility
US 5,591,157 · App. 08/301,911

Method and apparatus for tympanic membrane shrinkage

Inventors: David R. Hennings, Arthur Vassiliadis, Richard Goode, Bruce J. Sand, Stuart Harmon
Patented Case View Patent ↗
Granted: Jan 7, 1997 Filed: Sep 7, 1994
Inventors
David R. Hennings
Arthur Vassiliadis
Richard Goode
Bruce J. Sand
Stuart Harmon

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.

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Quick Facts
Patent No.
US 5,591,157
App. No.
08/301,911
Filed
1994-09-07
Granted
1997-01-07
Kind
A