Granted Patent
Utility
US 6,705,135 · App. 10/384,634
Excavator lock
Inventor:
Bryan Witchey
Patented Case
View Patent ↗
Granted: Mar 16, 2004
Filed: Mar 11, 2003
Inventor
Bryan Witchey
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.