NL92331C - - Google Patents
Info
- Publication number
- NL92331C NL92331C NL186847A NL186847A NL92331C NL 92331 C NL92331 C NL 92331C NL 186847 A NL186847 A NL 186847A NL 186847 A NL186847 A NL 186847A NL 92331 C NL92331 C NL 92331C
- Authority
- NL
- Netherlands
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
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
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 |
|---|---|---|---|
| FR92331X | 1953-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL92331C true NL92331C (en:Method) | 1959-09-16 |
Family
ID=1835857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL186847A NL92331C (en:Method) | 1953-04-20 | 1954-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL92331C (en:Method) |
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1954
- 1954-04-15 NL NL186847A patent/NL92331C/xx active