FR378024A - Steel drill bit for compressed air punches - Google Patents
Steel drill bit for compressed air punchesInfo
- Publication number
- FR378024A FR378024A FR378024DA FR378024A FR 378024 A FR378024 A FR 378024A FR 378024D A FR378024D A FR 378024DA FR 378024 A FR378024 A FR 378024A
- Authority
- FR
- France
- Prior art keywords
- punches
- compressed air
- drill bit
- steel drill
- steel
- 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
- 229910000831 Steel Inorganic materials 0.000 title 1
- 239000010959 steel Substances 0.000 title 1
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (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 |
---|---|---|---|
DE378024X | 1906-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR378024A true FR378024A (en) | 1907-09-21 |
Family
ID=1424404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR378024D Expired FR378024A (en) | 1906-05-29 | 1907-05-22 | Steel drill bit for compressed air punches |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR378024A (en) |
-
1907
- 1907-05-22 FR FR378024D patent/FR378024A/en not_active Expired
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