FR2290980B3 - - Google Patents
Info
- Publication number
- FR2290980B3 FR2290980B3 FR7502347A FR7502347A FR2290980B3 FR 2290980 B3 FR2290980 B3 FR 2290980B3 FR 7502347 A FR7502347 A FR 7502347A FR 7502347 A FR7502347 A FR 7502347A FR 2290980 B3 FR2290980 B3 FR 2290980B3
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/003—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for drilling elongated pieces, e.g. beams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
- B23B39/16—Drilling machines with a plurality of working-spindles; Drilling automatons
- B23B39/22—Drilling machines with a plurality of working-spindles; Drilling automatons with working-spindles in opposite headstocks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE7438095 | 1974-11-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2290980A1 FR2290980A1 (fr) | 1976-06-11 |
FR2290980B3 true FR2290980B3 (no) | 1977-10-21 |
Family
ID=6647467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7502347A Granted FR2290980A1 (fr) | 1974-11-14 | 1975-01-24 | Perceuse, notamment pour eclisses de raccordement de rails de chemin de fer |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2290980A1 (no) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111041992A (zh) * | 2019-12-18 | 2020-04-21 | 中建科工集团有限公司 | 一种采用轨道滑移的变轨方法 |
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1975
- 1975-01-24 FR FR7502347A patent/FR2290980A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2290980A1 (fr) | 1976-06-11 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |