FR1597857A - - Google Patents

Info

Publication number
FR1597857A
FR1597857A FR1597857DA FR1597857A FR 1597857 A FR1597857 A FR 1597857A FR 1597857D A FR1597857D A FR 1597857DA FR 1597857 A FR1597857 A FR 1597857A
Authority
FR
France
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.)
Expired
Application number
Other languages
French (fr)
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
Priority claimed from DE19681583800 external-priority patent/DE1583800A1/de
Application filed filed Critical
Application granted granted Critical
Publication of FR1597857A publication Critical patent/FR1597857A/fr
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
    • E21D23/0078—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 with individual shifting 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)
  • Support Of The Bearing (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
FR1597857D 1968-02-29 1968-12-16 Expired FR1597857A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681583800 DE1583800A1 (de) 1968-02-29 1968-02-29 Rueckvorrichtung fuer hydraulische Ausbaueinheiten

Publications (1)

Publication Number Publication Date
FR1597857A true FR1597857A (de) 1970-06-29

Family

ID=5679560

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1597857D Expired FR1597857A (de) 1968-02-29 1968-12-16

Country Status (4)

Country Link
BE (1) BE725517A (de)
ES (1) ES362787A1 (de)
FR (1) FR1597857A (de)
GB (1) GB1248967A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112597677B (zh) * 2020-12-11 2022-12-27 重庆大学 一种判断煤矿掘进工作面最大控顶距的方法

Also Published As

Publication number Publication date
GB1248967A (en) 1971-10-06
ES362787A1 (es) 1970-11-16
BE725517A (de) 1969-05-29

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Legal Events

Date Code Title Description
ST Notification of lapse