Granted Patent
Utility
US 6,286,401 · App. 09/590,054
Screwdriver with holding feature for socket head screws
Inventor:
Mohammed Ali Hajianpour
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Jun 8, 2000
Inventor
Mohammed Ali Hajianpour
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.