Granted Patent
Utility
US 5,280,754 · App. 07/908,645
Transit car power door obstruction sensing system and device
Inventors:
Daniel John Flanagan, Robert M. Gutierrez, Patrick Udelhofen, William J. Patsch
Patented Case
View Patent ↗
Granted: Jan 25, 1994
Filed: Jul 2, 1992
Inventors
Daniel John Flanagan
Robert M. Gutierrez
Patrick Udelhofen
William J. Patsch
Assignee (at issue)
Mark IV Transportation Products Corp. (Vapor Div)
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.