Granted Patent
Utility
US 6,428,244 · App. 09/621,365
Connecting element for sheet piles
Inventor:
Georg Wall
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Jul 21, 2000
Inventor
Georg Wall
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.