Granted Patent
Utility
US 6,482,001 · App. 09/894,234
Orthodontic screw expansion device
Inventors:
Farrokh Farzin-Nia, Craig A. Andreiko
Patented Case
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Granted: Nov 19, 2002
Filed: Jun 27, 2001
Inventors
Farrokh Farzin-Nia
Craig A. Andreiko
Assignee (at issue)
Ormco Corporation
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.