Granted Patent
Utility
US 4,326,534 · App. 06/050,760
Transcutaneous electrical muscle stimulation for treatment of scoliosis and other spinal deformities
Inventors:
Jens Axelgaard, David C. Howson, John A. Perhay
Patented Case
View Patent ↗
Granted: Apr 27, 1982
Filed: Jun 21, 1979
Inventors
Jens Axelgaard
David C. Howson
John A. Perhay
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.