Granted Patent
Utility
US 6,675,509 · App. 10/154,568
Excavating bucket with replaceable wedge-locked teeth
Inventor:
Robert S. Bierwith
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: May 23, 2002
Inventor
Robert S. Bierwith
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.