Granted Patent
Utility
US 5,449,376 · App. 08/077,389
System and method for producing highly amplified radio signals for feedback into the human body
Inventor:
Philip S. Callahan
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Jun 17, 1993
Inventor
Philip S. Callahan
Assignee (at issue)
Richard J. Fox
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.