Granted Patent
Utility
US 6,234,103 · App. 09/543,455
Ramp unit for floating pontoons
Inventor:
Lothar Emrich
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Apr 5, 2000
Inventor
Lothar Emrich
Assignee (at issue)
EWK Eisenwerke Kaiserlauten 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.