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.)
FERNAND LAURENT EDMOND JOSEPH
Original Assignee
FERNAND LAURENT EDMOND JOSEPH
Publication date
Application grantedgrantedCritical
Publication of FR19157EpublicationCriticalpatent/FR19157E/en
Device for phonographical recording and replay Device for phonographical recording and playback of conversations transmitted by telephone. results of conversations transmitted by telephone.