Granted Patent
Utility
US 5,647,371 · App. 08/421,617
Skin testing device loading method
Inventors:
William I. White, Robert E. Esch, John Albert Richardson
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Apr 12, 1995
Inventors
William I. White
Robert E. Esch
John Albert Richardson
Assignee (at issue)
GREER LABORATORIES, 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.