Granted Patent
Utility
US 4,462,722 · App. 06/444,146
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Inventor:
Imants Reba
Patented Case
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Granted: Jul 31, 1984
Filed: Nov 24, 1982
Inventor
Imants Reba
Assignee (at issue)
Crown Zellerbach 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.