FR495657A - - Google Patents
Info
- Publication number
- FR495657A FR495657A FR495657DA FR495657A FR 495657 A FR495657 A FR 495657A FR 495657D A FR495657D A FR 495657DA FR 495657 A FR495657 A FR 495657A
- 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
-
- 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
- E21D15/36—Telescopic props with parts held relatively to each other by friction or gripping by a tiltable collar surrounding one or both parts
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 |
|---|---|---|---|
| FR495657T | 1919-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR495657A true FR495657A (xx) | 1919-10-15 |
Family
ID=1531175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR495657D Expired FR495657A (xx) | 1919-02-10 | 1919-02-10 |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR495657A (xx) |
-
1919
- 1919-02-10 FR FR495657D patent/FR495657A/fr not_active Expired