FR868571A - Perforatrice - Google Patents
PerforatriceInfo
- Publication number
- FR868571A FR868571A FR868571DA FR868571A FR 868571 A FR868571 A FR 868571A FR 868571D A FR868571D A FR 868571DA FR 868571 A FR868571 A FR 868571A
- Authority
- FR
- France
- Prior art keywords
- punch
- 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
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
- E21B44/02—Automatic control of the tool feed
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US868571XA | 1939-04-19 | 1939-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR868571A true FR868571A (fr) | 1942-01-07 |
Family
ID=22201351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR868571D Expired FR868571A (fr) | 1939-04-19 | 1940-04-19 | Perforatrice |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR868571A (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090304A (zh) * | 2021-04-30 | 2021-07-09 | 中煤科工开采研究院有限公司 | 锚注锚杆支护施工方法 |
| CN116499799A (zh) * | 2023-07-03 | 2023-07-28 | 承德周道路桥有限公司 | 一种公路路面施工质量检测取样装置 |
-
1940
- 1940-04-19 FR FR868571D patent/FR868571A/fr not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090304A (zh) * | 2021-04-30 | 2021-07-09 | 中煤科工开采研究院有限公司 | 锚注锚杆支护施工方法 |
| CN113090304B (zh) * | 2021-04-30 | 2023-11-24 | 中煤科工开采研究院有限公司 | 锚注锚杆支护施工方法 |
| CN116499799A (zh) * | 2023-07-03 | 2023-07-28 | 承德周道路桥有限公司 | 一种公路路面施工质量检测取样装置 |
| CN116499799B (zh) * | 2023-07-03 | 2023-09-08 | 承德周道路桥有限公司 | 一种公路路面施工质量检测取样装置 |
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