Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LENS EMILE DE
Original Assignee
LENS EMILE DE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LENS EMILE DEfiledCriticalLENS EMILE DE
Priority to FR7215446ApriorityCriticalpatent/FR2181586A1/fr
Publication of FR2181586A1publicationCriticalpatent/FR2181586A1/fr