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Clemens Riefler Fabrik Mathematischer Instrumente
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Clemens Riefler Fabrik Mathematischer Instrumente
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Priority claimed from DEB74192Aexternal-prioritypatent/DE1264997B/de
Application filed by Clemens Riefler Fabrik Mathematischer InstrumentefiledCriticalClemens Riefler Fabrik Mathematischer Instrumente
Priority to FR994135ApriorityCriticalpatent/FR1435820A/fr
Application grantedgrantedCritical
Publication of FR1435820ApublicationCriticalpatent/FR1435820A/fr