NL42622C - - Google Patents
Info
- Publication number
- NL42622C NL42622C NL42622DA NL42622C NL 42622 C NL42622 C NL 42622C NL 42622D A NL42622D A NL 42622DA NL 42622 C NL42622 C NL 42622C
- 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
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
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)
- Forging (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF79997D DE633791C (de) | Nachgiebiger Grubenstempel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL42622C true NL42622C (de) |
Family
ID=7113379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL42622D NL42622C (de) |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE633791C (de) |
| NL (1) | NL42622C (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975177C (de) * | 1944-09-22 | 1961-09-21 | Karl Gerlach | Zweiteiliger Stahlgrubenstempel |
| DE847283C (de) * | 1950-07-09 | 1952-08-21 | Mannesmann Ag | Hydraulischer Grubenstempel |
-
0
- NL NL42622D patent/NL42622C/xx active
- DE DEF79997D patent/DE633791C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE633791C (de) | 1936-08-06 |
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