Class 505/902 - Railway (e.g., rapid transit, etc.): (Class 104)

Subclass of Class 505 - Superconductor technology: apparatus, material, process
Definition: Subject matter including (a) railroad rolling stock and
No. of patents: 2
Last issue date: 12/25/1990

Number	Title	Issue Date
4979445	Magnetically levitated vehicle with superconducting mirror sheets interacting with guideway magnetic fields A magnetically levitated vehicle in which on-board sheets of superconductive material interact with guideway magnetic fields to levitate, drive, and brake the vehicle....	12/25/1990
4663932	Dipolar force field propulsion system A dipolar force field propulsion system having a alternating electric field source for producing electromotive lines of force which extend in a first direction and which vary at a selected frequency and having an electric field strength of a predetermined...	05/12/1987

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