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Priority to BE649521DpriorityCriticalpatent/BE649521A/xx
Application filedfiledCritical
Priority to FR939077Aprioritypatent/FR85308E/fr
Priority to CH790964Aprioritypatent/CH461176A/fr
Priority to NL6407111Aprioritypatent/NL6407111A/xx
Priority to DE19641432839prioritypatent/DE1432839A1/de
Application grantedgrantedCritical
Publication of FR85308EpublicationCriticalpatent/FR85308E/fr