Granted Patent
Utility
US 5,374,028 · App. 08/181,424
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Inventor:
Michael Neubold
Patented Case
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Granted: Dec 20, 1994
Filed: Jan 14, 1994
Inventor
Michael Neubold
Assignee (at issue)
ABB Management AG
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.