Granted Patent
Utility
US 6,382,117 · App. 09/815,740
Sewing machine needle having a T-shaped shank
Inventors:
Arivaldo Viera Cardoso, Luiz Carlos de Araujo
Patented Case
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Granted: May 7, 2002
Filed: Mar 23, 2001
Inventors
Arivaldo Viera Cardoso
Luiz Carlos de Araujo
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.