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.)
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
E21D11/04—Lining with building materials
E21D11/06—Lining with building materials with bricks
Landscapes
Engineering & Computer Science
(AREA)
Architecture
(AREA)
Structural Engineering
(AREA)
Mining & Mineral Resources
(AREA)
Civil Engineering
(AREA)
Life Sciences & Earth Sciences
(AREA)
General Life Sciences & Earth Sciences
(AREA)
Geochemistry & Mineralogy
(AREA)
Geology
(AREA)
Footwear And Its Accessory, Manufacturing Method And Apparatuses
(AREA)
Underground Structures, Protecting, Testing And Restoring Foundations
(AREA)
Eine Ausführungsform der durch die Patente Nr. 29230 und den Zusatz Nr. 52348 geschützten Vorrichtungen zum Abteufen von Schächten in schwimmendem Gebirge