Granted Patent
Utility
US 6,355,047 · App. 09/365,658
Traction force sensing vacuum extractor
Inventors:
William D. Wallace, Richard A. Dixon, Steven R. Smith, Christopher A. Cutler
Patented Case
View Patent ↗
Granted: Mar 12, 2002
Filed: Aug 2, 1999
Inventors
William D. Wallace
Richard A. Dixon
Steven R. Smith
Christopher A. Cutler
Assignee (at issue)
Clinical Innovations, LLC
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.