Railway switches and signals
Block-signal systems
Automatic
Inventor
active
Audio frequency track circuit for rapid transit applications wit
Automatic vehicle control and location system
Combination frequency loop coupling for railway track signalling
Microprocessor based track circuit for occupancy detection and b
Vital interface system for railway signalling
No associations
LandOfFree
James R. Hoelscher does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with James R. Hoelscher, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and James R. Hoelscher will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-174485