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Application filed by Keller Liechti JakobfiledCriticalKeller Liechti Jakob
Publication of CH30242ApublicationCriticalpatent/CH30242A/de
CH30242A1904-01-071904-01-07Automatisch wirkende Vorrichtung zur Verhinderung des seitlichen Ablaufens der Förderbänder von ihren Unterstützungswalzen
CH30242A
(de)