Granted Patent
Utility
US 6,302,470 · App. 09/531,202
Convertible vehicle
Inventors:
Joachim Maass, Frank Lehnig
Patented Case
View Patent ↗
Granted: Oct 16, 2001
Filed: Mar 20, 2000
Inventors
Joachim Maass
Frank Lehnig
Assignee (at issue)
Wilhelm Karmann 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.