Granted Patent
Utility
US 6,378,704 · App. 09/496,236
Water separation system, method and apparatus for construction debris
Inventor:
Herbert Krause
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Feb 1, 2000
Inventor
Herbert Krause
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.