Granted Patent
Utility
US 5,660,421 · App. 08/759,365
Prospector's shovel and crevicing tool
Inventor:
Leo M. Krenzler
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Nov 1, 1996
Inventor
Leo M. Krenzler
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.