DE286944C - - Google Patents

Info

Publication number
DE286944C
DE286944C DENDAT286944D DE286944DA DE286944C DE 286944 C DE286944 C DE 286944C DE NDAT286944 D DENDAT286944 D DE NDAT286944D DE 286944D A DE286944D A DE 286944DA DE 286944 C DE286944 C DE 286944C
Authority
DE
Germany
Prior art keywords
lever arm
robbing
sayings
unscrewed
stamp
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
DENDAT286944D
Other languages
German (de)
English (en)
Publication of DE286944C publication Critical patent/DE286944C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/60—Devices for withdrawing props or chocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
DENDAT286944D Active DE286944C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
DE286944C true DE286944C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=542211

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT286944D Active DE286944C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
DE (1) DE286944C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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