FR2157198A5 - - Google Patents
Info
- Publication number
- FR2157198A5 FR2157198A5 FR7137930A FR7137930A FR2157198A5 FR 2157198 A5 FR2157198 A5 FR 2157198A5 FR 7137930 A FR7137930 A FR 7137930A FR 7137930 A FR7137930 A FR 7137930A FR 2157198 A5 FR2157198 A5 FR 2157198A5
- Authority
- FR
- France
- 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/02—Provisional protective covers for working space for use in longwall working
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0454—Trailing plates; Coal face or goaf side sprags
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7137930A FR2157198A5 (fr) | 1971-10-21 | 1971-10-21 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7137930A FR2157198A5 (fr) | 1971-10-21 | 1971-10-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2157198A5 true FR2157198A5 (fr) | 1973-06-01 |
Family
ID=9084729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7137930A Expired FR2157198A5 (fr) | 1971-10-21 | 1971-10-21 |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2157198A5 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2523207A1 (fr) * | 1982-04-29 | 1983-09-16 | Bergwerksverband Gmbh | Dispositif pour la compression de remblais |
-
1971
- 1971-10-21 FR FR7137930A patent/FR2157198A5/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2523207A1 (fr) * | 1982-04-29 | 1983-09-16 | Bergwerksverband Gmbh | Dispositif pour la compression de remblais |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |