Granted Patent
Utility
US 5,712,543 · App. 08/630,125
Magnetic switching element for controlling a surgical device
Inventor:
Douglas D. Sjostrom
Patented Case
View Patent ↗
Granted: Jan 27, 1998
Filed: Apr 10, 1996
Inventor
Douglas D. Sjostrom
Assignee (at issue)
Smith & Nephew Endoscopy 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.