Granted Patent
Utility
US 6,793,662 · App. 10/623,399
Amniotic membrane perforator
Inventors:
David Wayne Watermeier, Pamela Kay Hicks
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Jul 18, 2003
Inventors
David Wayne Watermeier
Pamela Kay Hicks
Assignee (at issue)
DeRoyal Industries, 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.