Granted Patent
Utility
US 4,262,836 · App. 06/046,631
Sewing apparatus using thermoplastic staples
Inventor:
Tokuzo Hirose
Patented Case
View Patent ↗
Granted: Apr 21, 1981
Filed: Jun 7, 1979
Inventor
Tokuzo Hirose
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.