DE2161951A1 - - Google Patents

Info

Publication number
DE2161951A1
DE2161951A1 DE19712161951 DE2161951A DE2161951A1 DE 2161951 A1 DE2161951 A1 DE 2161951A1 DE 19712161951 DE19712161951 DE 19712161951 DE 2161951 A DE2161951 A DE 2161951A DE 2161951 A1 DE2161951 A1 DE 2161951A1
Authority
DE
Germany
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.)
Granted
Application number
DE19712161951
Other languages
German (de)
Other versions
DE2161951C (de
DE2161951B1 (de
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 filed Critical
Priority to DE19712161951 priority Critical patent/DE2161951C/de
Priority claimed from DE19712161951 external-priority patent/DE2161951C/de
Publication of DE2161951A1 publication Critical patent/DE2161951A1/de
Publication of DE2161951B1 publication Critical patent/DE2161951B1/de
Application granted granted Critical
Publication of DE2161951C publication Critical patent/DE2161951C/de
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices

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)
  • Fluid-Pressure Circuits (AREA)
DE19712161951 1971-12-14 Regelvorrichtung zur Aufrechter haltung eines konstanten Druckes in einer Speiseleitung fur einen hydrau liehen Grubenausbau Expired DE2161951C (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712161951 DE2161951C (de) 1971-12-14 Regelvorrichtung zur Aufrechter haltung eines konstanten Druckes in einer Speiseleitung fur einen hydrau liehen Grubenausbau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712161951 DE2161951C (de) 1971-12-14 Regelvorrichtung zur Aufrechter haltung eines konstanten Druckes in einer Speiseleitung fur einen hydrau liehen Grubenausbau

Publications (3)

Publication Number Publication Date
DE2161951A1 true DE2161951A1 (enExample) 1973-01-04
DE2161951B1 DE2161951B1 (de) 1973-01-04
DE2161951C DE2161951C (de) 1973-07-26

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2815859A1 (de) * 1978-04-12 1979-10-18 Bayer Ag Verfahren zur herstellung von olefinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2815859A1 (de) * 1978-04-12 1979-10-18 Bayer Ag Verfahren zur herstellung von olefinen

Also Published As

Publication number Publication date
DE2161951B1 (de) 1973-01-04

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Legal Events

Date Code Title Description
B1 Publication of the examined application without previous publication of unexamined application
C2 Grant after previous publication (2nd publication)