FR1071602A - Poteau de mine - Google Patents

Poteau de mine

Info

Publication number: FR1071602A
Authority: FR; France
Prior art keywords: pit prop; prop; pit
Prior art date: 1948-03-11
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

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

GEWERKSCHAFT INTERRA

Original Assignee

GEWERKSCHAFT INTERRA

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.)

1948-03-11

Filing date

1948-03-11

Publication date

1954-09-02

1948-03-11 Application filed by GEWERKSCHAFT INTERRA filed Critical GEWERKSCHAFT INTERRA

1954-09-02 Application granted granted Critical

1954-09-02 Publication of FR1071602A publication Critical patent/FR1071602A/fr

Status Expired legal-status Critical Current

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
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations

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)

FR1071602D 1948-03-11 1948-03-11 Poteau de mine Expired FR1071602A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR1071602T		1948-03-11

Publications (1)

Publication Number	Publication Date
FR1071602A true FR1071602A (fr)	1954-09-02

Family

ID=9605233

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR1071602D Expired FR1071602A (fr)	1948-03-11	1948-03-11	Poteau de mine

Country Status (1)

Country	Link
FR (1)	FR1071602A (fr)

1948
- 1948-03-11 FR FR1071602D patent/FR1071602A/fr not_active Expired

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