Granted Patent
Utility
US 6,565,288 · App. 09/454,831
Soil nail apparatus
Inventor:
James P. McCallion
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Dec 6, 1999
Inventor
James P. McCallion
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.