Granted Patent
Utility
US 4,257,727 · App. 05/945,393
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Inventor:
John J. Peyton
Patented Case
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Granted: Mar 24, 1981
Filed: Sep 25, 1978
Inventor
John J. Peyton
Assignee (at issue)
Industrial Automation 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.