Granted Patent
Utility
US 6,216,368 · App. 09/329,989
Excavating bucket with replaceable wedge-locked teeth
Inventor:
Robert S. Bierwith
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Jun 9, 1999
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.