Granted Patent
Utility
US 4,635,560 · App. 06/688,937
Contactless powering of LIM vehicle electrical system by recovery of LIM slip power
Inventor:
W. John Ballantyne
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Jan 4, 1985
Inventor
W. John Ballantyne
Assignee (at issue)
Urban Transportation Development Corp., Ltd.
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.