DE286944C - - Google Patents
Info
- Publication number
- DE286944C DE286944C DENDAT286944D DE286944DA DE286944C DE 286944 C DE286944 C DE 286944C DE NDAT286944 D DENDAT286944 D DE NDAT286944D DE 286944D A DE286944D A DE 286944DA DE 286944 C DE286944 C DE 286944C
- Authority
- DE
- Germany
- Prior art keywords
- lever arm
- robbing
- sayings
- unscrewed
- stamp
- 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.)
- Active
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)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE286944C true DE286944C (https=) |
Family
ID=542211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT286944D Active DE286944C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE286944C (https=) |
-
0
- DE DENDAT286944D patent/DE286944C/de active Active
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