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.)
FORAKY
Original Assignee
FORAKY
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 FORAKYfiledCriticalFORAKY
Priority to FR738390ApriorityCriticalpatent/FR72612E/fr
Application grantedgrantedCritical
Publication of FR72612EpublicationCriticalpatent/FR72612E/fr
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D1/00—Sinking shafts
E21D1/10—Preparation of the ground
E21D1/12—Preparation of the ground by freezing
E21D1/14—Freezing apparatus
Landscapes
Engineering & Computer Science
(AREA)
Mining & Mineral Resources
(AREA)
Environmental & Geological Engineering
(AREA)
Mechanical Engineering
(AREA)
Life Sciences & Earth Sciences
(AREA)
General Life Sciences & Earth Sciences
(AREA)
Geochemistry & Mineralogy
(AREA)
Geology
(AREA)
FR738390A1957-05-131957-05-13Perfectionnement au procédé de congélation, notamment pour le creusement de puits et excavations en terrains aquifères
ExpiredFR72612E
(fr)