using electrically controlled fluid-pressure operated driving means

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Patents Grantslast 30 patents

Information Patent Grant
High-speed railway switch device for moving railroad switch points
- Patent number 12,091,071
- Issue date Sep 17, 2024
- Dilson dos Santos Rodrigues
- B61 - RAILWAYS
Information Patent Grant
1796674
- Patent number 1,796,674
- Issue date Mar 17, 1931
- B61 - RAILWAYS
Information Patent Grant
1405494
- Patent number 1,405,494
- Issue date Feb 7, 1922
- B61 - RAILWAYS