CS153588B2 - - Google Patents
Info
- Publication number
- CS153588B2 CS153588B2 CS575171A CS575171A CS153588B2 CS 153588 B2 CS153588 B2 CS 153588B2 CS 575171 A CS575171 A CS 575171A CS 575171 A CS575171 A CS 575171A CS 153588 B2 CS153588 B2 CS 153588B2
- Authority
- CS
- Czechoslovakia
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
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)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Tents Or Canopies (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUBA002505 | 1970-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS153588B2 true CS153588B2 (ro) | 1974-02-25 |
Family
ID=10993325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS575171A CS153588B2 (ro) | 1970-12-09 | 1971-08-09 |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT311910B (ro) |
| BG (1) | BG28277A3 (ro) |
| CS (1) | CS153588B2 (ro) |
| DE (1) | DE2133640A1 (ro) |
| PL (1) | PL77728B1 (ro) |
| RO (1) | RO58812A (ro) |
-
1971
- 1971-07-06 DE DE19712133640 patent/DE2133640A1/de active Pending
- 1971-07-07 AT AT590571A patent/AT311910B/de not_active IP Right Cessation
- 1971-07-10 PL PL14936771A patent/PL77728B1/pl unknown
- 1971-07-21 BG BG018129A patent/BG28277A3/xx unknown
- 1971-07-22 RO RO6776271A patent/RO58812A/ro unknown
- 1971-08-09 CS CS575171A patent/CS153588B2/cs unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BG28277A3 (en) | 1980-03-25 |
| PL77728B1 (en) | 1975-04-30 |
| AT311910B (de) | 1973-12-10 |
| DE2133640A1 (de) | 1972-06-22 |
| RO58812A (ro) | 1975-09-15 |