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.)
PAUL LOUIS MAURICE PHILBEE
PIERRE LEON REBECHE
Original Assignee
PAUL LOUIS MAURICE PHILBEE
PIERRE LEON REBECHE
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 PAUL LOUIS MAURICE PHILBEE, PIERRE LEON REBECHEfiledCriticalPAUL LOUIS MAURICE PHILBEE
Application grantedgrantedCritical
Publication of FR463770ApublicationCriticalpatent/FR463770A/fr
étanchéité extérieure pour le tubage et le détubage des tubes pour l'introduction et l'extraction des garnitures de forage des couches éruptives