Granted Patent
Utility
US 4,245,918 · App. 05/908,315
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Inventors:
David J. Bowles, Douglas E. Clancy, Carl F. Johnson, Danny Marvin Neal
Patented Case
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Granted: Jan 20, 1981
Filed: May 22, 1978
Inventors
David J. Bowles
Douglas E. Clancy
Carl F. Johnson
Danny Marvin Neal
Assignee (at issue)
International Business Machines 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.