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.)
Individual
Original Assignee
Individual
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 grantedgrantedCritical
Publication of FR21EpublicationCriticalpatent/FR21E/fr
Application filed by IndividualfiledCriticalIndividual
FR21A1901-02-261902-01-11Foreuse pour entailler les roches, pouvant etre tournée autour de la colonne-support au moyen d'un engrenage à vis sans fin
ExpiredFR21E
(fr)