Granted Patent
Utility
US 6,722,931 · App. 10/353,820
Amphibian bridge-forming and ferrying vehicle
Inventor:
Klaus Eberl
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Jan 29, 2003
Inventor
Klaus Eberl
Assignee (at issue)
General Dynamics Santa Bárbara Sistemas GmbH
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.