Heuilleres du Bassin de Lorraine

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Freyming-Merlebach, FR

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Information Patent Grant
Telescopic support caps, e.g. for use in mining
- Patent number 3,991,577
- Issue date Nov 16, 1976
- Heuilleres du Bassin de Lorraine
- Jean P. Thevenoux
- E21 - EARTH DRILLING MINING

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