using mechanical interaction between vehicle and track

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Patents Grantslast 30 patents

Information Patent Grant
Reusable derailment detection and signaling device
- Patent number 4,895,324
- Issue date Jan 23, 1990
- Don R. Buckles
- B61 - RAILWAYS
Information Patent Grant
Method for calibrating beam emitter type speed sensor for railroad...
- Patent number 4,353,068
- Issue date Oct 5, 1982
- Emilio A. Fernandez
- G01 - MEASURING TESTING
Information Patent Grant
1569004
- Patent number 1,569,004
- Issue date Jan 12, 1926
- B61 - RAILWAYS