FR1067744A - étançon de mine perfectionné - Google Patents

étançon de mine perfectionné

Info

Publication number: FR1067744A
Authority: FR; France
Prior art keywords: mine prop; advanced mine; advanced; prop; mine
Prior art date: 1951-12-17
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

English (en)

Inventor

John Handley

Jack Nixon Browne

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.)

1951-12-17

Filing date

1952-12-16

Publication date

1954-06-17

1952-12-16 Application filed filed Critical

1954-06-17 Application granted granted Critical

1954-06-17 Publication of FR1067744A publication Critical patent/FR1067744A/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
- E21D15/46—Telescopic props with load-measuring devices; with alarm devices

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)

FR1067744D 1951-12-17 1952-12-16 étançon de mine perfectionné Expired FR1067744A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB1067744X		1951-12-17

Publications (1)

Publication Number	Publication Date
FR1067744A true FR1067744A (fr)	1954-06-17

Family

ID=10871779

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR1067744D Expired FR1067744A (fr)	1951-12-17	1952-12-16	étançon de mine perfectionné

Country Status (1)

Country	Link
FR (1)	FR1067744A (fr)

1952
- 1952-12-16 FR FR1067744D patent/FR1067744A/fr not_active Expired

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