Granted Patent
Utility
US 5,667,169 · App. 08/423,508
Door system, particularly for a passenger plane
Inventors:
Hannes Erben, Wolfgang Buchs
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Apr 17, 1995
Inventors
Hannes Erben
Wolfgang Buchs
Assignee (at issue)
Eurocopter Deutschland 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.