Granted Patent
Utility
US 6,424,722 · App. 08/896,484
Portable system for programming hearing aids
Inventors:
Lawrence T. Hagen, David A. Preves
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Jul 18, 1997
Inventors
Lawrence T. Hagen
David A. Preves
Assignee (at issue)
Micro Ear Technology, 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.