BE493622A - - Google Patents
Info
- Publication number
- BE493622A BE493622A BE493622DA BE493622A BE 493622 A BE493622 A BE 493622A BE 493622D A BE493622D A BE 493622DA BE 493622 A BE493622 A BE 493622A
- Authority
- BE
- Belgium
- Prior art keywords
- seals
- section
- rubber
- metal
- core
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
- E21F1/06—Duct connections
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)
- Duct Arrangements (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE493622A true BE493622A (pm) |
Family
ID=137580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE493622D BE493622A (pm) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE493622A (pm) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116696440A (zh) * | 2023-07-17 | 2023-09-05 | 中交第二公路工程局有限公司 | 一种三通变径转弯风管的f型压入式通风系统及使用方法 |
-
0
- BE BE493622D patent/BE493622A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116696440A (zh) * | 2023-07-17 | 2023-09-05 | 中交第二公路工程局有限公司 | 一种三通变径转弯风管的f型压入式通风系统及使用方法 |
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