Granted Patent
Utility
US 5,935,136 · App. 08/853,422
Obstetrical vacuum extractor cup with soft molded lip
Inventors:
Jerry Dwayne Hulse, William H. Wright
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: May 9, 1997
Inventors
Jerry Dwayne Hulse
William H. Wright
Assignee (at issue)
Pristech, 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.