Granted Patent
Utility
US 5,904,706 · App. 08/910,757
Method and apparatus for producing electrotherapy current waveform with ripple
Inventors:
Shervin Ayati, Michael L. Lopin
Patented Case
View Patent ↗
Granted: May 18, 1999
Filed: Aug 13, 1997
Inventors
Shervin Ayati
Michael L. Lopin
Assignee (at issue)
ZMD Corporation
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.