Granted Patent
Utility
US 4,009,757 · App. 05/546,802
Sand consolidation method
Inventor:
Roy R. Vann
Patented Case
View Patent ↗
Granted: Mar 1, 1977
Filed: Feb 3, 1975
Inventor
Roy R. Vann
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.