Granted Patent
Utility
US 6,561,523 · App. 09/714,592
Automatic tool-bit holder
Inventor:
James L. Wienhold
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Nov 16, 2000
Inventor
James L. Wienhold
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.