FR1077441A - Bèle simple - Google Patents
Bèle simpleInfo
- Publication number
- FR1077441A FR1077441A FR1077441DA FR1077441A FR 1077441 A FR1077441 A FR 1077441A FR 1077441D A FR1077441D A FR 1077441DA FR 1077441 A FR1077441 A FR 1077441A
- Authority
- FR
- France
- Prior art keywords
- bèle
- simple bèle
- 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.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
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)
- Golf Clubs (AREA)
- Holders For Apparel And Elements Relating To Apparel (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE742741X | 1952-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1077441A true FR1077441A (fr) | 1954-11-08 |
Family
ID=3879449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1077441D Expired FR1077441A (fr) | 1952-07-23 | 1953-05-19 | Bèle simple |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE513045A (fr) |
FR (1) | FR1077441A (fr) |
GB (1) | GB742741A (fr) |
LU (1) | LU32191A1 (fr) |
-
0
- LU LU32191D patent/LU32191A1/xx unknown
- BE BE513045D patent/BE513045A/xx unknown
-
1953
- 1953-05-19 FR FR1077441D patent/FR1077441A/fr not_active Expired
- 1953-06-12 GB GB16238/53A patent/GB742741A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB742741A (en) | 1956-01-04 |
LU32191A1 (fr) | |
BE513045A (fr) |
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