FR979823A - Base for mine poles - Google Patents
Base for mine polesInfo
- Publication number
- FR979823A FR979823A FR979823DA FR979823A FR 979823 A FR979823 A FR 979823A FR 979823D A FR979823D A FR 979823DA FR 979823 A FR979823 A FR 979823A
- Authority
- FR
- France
- Prior art keywords
- mine
- poles
- base
- mine poles
- 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
- E21D15/02—Non-telescopic props
- E21D15/06—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability
- E21D15/12—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability with locking devices located near head or foot
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 |
---|---|---|---|
CH979823X | 1948-02-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR979823A true FR979823A (en) | 1951-05-04 |
Family
ID=4551296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR979823D Expired FR979823A (en) | 1948-02-09 | 1949-01-31 | Base for mine poles |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR979823A (en) |
-
1949
- 1949-01-31 FR FR979823D patent/FR979823A/en not_active Expired
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