Granted Patent
Utility
US 5,161,533 · App. 07/762,182
Break-apart needle electrode system for monitoring facial EMG
Inventors:
Richard L. Prass, George C. Robertson
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: Sep 19, 1991
Inventors
Richard L. Prass
George C. Robertson
Assignee (at issue)
Xomed-Treace, 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.