Granted Patent
Utility
US 4,570,258 · App. 06/579,611
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Inventor:
Ronald A. McCracken
Patented Case
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Granted: Feb 11, 1986
Filed: Feb 13, 1984
Inventor
Ronald A. McCracken
Assignee (at issue)
Wang 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.