DE222274C - - Google Patents

Info

Publication number
DE222274C
DE222274C DENDAT222274D DE222274DA DE222274C DE 222274 C DE222274 C DE 222274C DE NDAT222274 D DENDAT222274 D DE NDAT222274D DE 222274D A DE222274D A DE 222274DA DE 222274 C DE222274 C DE 222274C
Authority
DE
Germany
Prior art keywords
wing
screw
section
pipe
wings
Prior art date
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.)
Active
Application number
DENDAT222274D
Other languages
German (de)
English (en)
Publication of DE222274C publication Critical patent/DE222274C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/08—Filling-up hydraulically or pneumatically

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Screw Conveyors (AREA)
DENDAT222274D Active DE222274C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
DE222274C true DE222274C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=483183

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT222274D Active DE222274C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
DE (1) DE222274C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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