Granted Patent
Utility
US 4,916,984 · App. 07/270,471
Shovel blade and method of manufacture
Inventor:
Barry R. Albert
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Nov 8, 1988
Inventor
Barry R. Albert
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.