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Patents Grantslast 30 patents

Information Patent Grant
Method of cast-welding between finely pearlitized rails
- Patent number 5,078,200
- Issue date Jan 7, 1992
- Elektro-Thermit GmbH
- Hans Guntermann
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Process for reconditioning worn frogs
- Patent number 3,976,239
- Issue date Aug 24, 1976
- Elektro-Thermit GmbH.
- Herbert Finck
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Process for the aluminothermic welding of rails
- Patent number 3,942,579
- Issue date Mar 9, 1976
- Elektro-Thermit GmbH.
- Hans Guntermann
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

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