FR876515A - Effondreur - Google Patents
EffondreurInfo
- Publication number
- FR876515A FR876515A FR876515DA FR876515A FR 876515 A FR876515 A FR 876515A FR 876515D A FR876515D A FR 876515DA FR 876515 A FR876515 A FR 876515A
- Authority
- FR
- France
- Prior art keywords
- collapsing
- 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
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/60—Devices for withdrawing props or chocks
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE876515X | 1939-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR876515A true FR876515A (fr) | 1942-11-09 |
Family
ID=3883115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR876515D Expired FR876515A (fr) | 1939-05-26 | 1940-12-23 | Effondreur |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR876515A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1018371B (de) * | 1955-10-15 | 1957-10-31 | Mining Engineering Co Ltd | Ausloesevorrichtung fuer Wanderpfeiler |
-
1940
- 1940-12-23 FR FR876515D patent/FR876515A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1018371B (de) * | 1955-10-15 | 1957-10-31 | Mining Engineering Co Ltd | Ausloesevorrichtung fuer Wanderpfeiler |
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