Granted Patent
Utility
US 4,132,379 · App. 05/845,704
Method for improving the stopping accuracy at railway stations of track-bound vehicles
Inventor:
Jorg Schwarzwalder
Patented Case
View Patent ↗
Granted: Jan 2, 1979
Filed: Oct 26, 1977
Inventor
Jorg Schwarzwalder
Assignee (at issue)
International Standard Electric Corporation
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.