Cab signalling system for railroads
United States Patent 2731550
US Patent References:
Electric signaling system
- - 1975371
Continuous inductive coded cab signaling system
- - 2098041
Signaling system
- - 2197417
Railway traffic controlling apparatus
- - 2297119
Railway traffic controlling apparatus
- - 2393136
Electric signaling system
- - 1975371
Continuous inductive coded cab signaling system
- - 2098041
Signaling system
- - 2197417
Railway traffic controlling apparatus
- - 2297119
Railway traffic controlling apparatus
- - 2393136
Inventors:
Friend, Stafford Chester
Publication Date:
01/17/1956
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Export Citation:
Assignee:
GEN RAILWAY SIGNAL CO
Primary Class:
Other Classes:
246/182R
International Classes:
B61L3/22; B61L3/00