Granted Patent
Utility
US 5,871,452 · App. 08/901,596
Skin test applicator
Inventors:
John F. Baker, David J. Thorson, William I. White
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Jul 28, 1997
Inventors
John F. Baker
David J. Thorson
William I. White
Assignee (at issue)
Rachman Scientific, 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.