ES314695A3 - Un dispositivo para el cambio de direcciën del medio de tracciën de un aparato de extracciën arrastrado por este a lo largo del frente de carbën
- Google Patents
Un dispositivo para el cambio de direcciën del medio de tracciën de un aparato de extracciën arrastrado por este a lo largo del frente de carbën
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Bergwerksverband GmbH
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Bergwerksverband GmbH
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Priority to ES0314695ApriorityCriticalpatent/ES314695A3/es
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ES0314695A1965-06-261965-06-26Un dispositivo para el cambio de direcciën del medio de tracciën de un aparato de extracciën arrastrado por este a lo largo del frente de carbën
ExpiredES314695A3
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