NL6816579A - - Google Patents
Info
- Publication number
- NL6816579A NL6816579A NL6816579A NL6816579A NL6816579A NL 6816579 A NL6816579 A NL 6816579A NL 6816579 A NL6816579 A NL 6816579A NL 6816579 A NL6816579 A NL 6816579A NL 6816579 A NL6816579 A NL 6816579A
- Authority
- NL
- Netherlands
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
- 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
-
- 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
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
- E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1608358 | 1967-11-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL6816579A true NL6816579A (en:Method) | 1969-05-23 |
| NL157380B NL157380B (nl) | 1978-07-17 |
Family
ID=5681528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6816579A NL157380B (nl) | 1967-11-21 | 1968-11-20 | Steenboor. |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE724180A (en:Method) |
| CH (1) | CH476559A (en:Method) |
| DE (1) | DE1608358C3 (en:Method) |
| NL (1) | NL157380B (en:Method) |
| SE (1) | SE349771B (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK152555C (da) * | 1985-04-01 | 1988-08-01 | Joran Bor A S | Stenbor, isaer til hammerboremaskiner |
| DE3540355C2 (de) * | 1985-11-14 | 1996-01-11 | Duss Maschf | Bohrer zum drehschlagenden Bohren |
| GB2393681A (en) | 2002-10-03 | 2004-04-07 | Black & Decker Inc | Masonry drilling tool |
-
1967
- 1967-11-21 DE DE1967D0054654 patent/DE1608358C3/de not_active Expired
-
1968
- 1968-11-07 CH CH1661668A patent/CH476559A/de not_active IP Right Cessation
- 1968-11-08 SE SE1520568A patent/SE349771B/xx unknown
- 1968-11-20 BE BE724180D patent/BE724180A/xx not_active IP Right Cessation
- 1968-11-20 NL NL6816579A patent/NL157380B/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BE724180A (en:Method) | 1969-05-02 |
| NL157380B (nl) | 1978-07-17 |
| SE349771B (en:Method) | 1972-10-09 |
| DE1608358C3 (de) | 1979-01-04 |
| DE1608358B2 (en:Method) | 1974-08-15 |
| DE1608358A1 (de) | 1970-12-23 |
| CH476559A (de) | 1969-08-15 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| V1 | Lapsed because of non-payment of the annual fee | ||
| NL80 | Abbreviated name of patent owner mentioned of already nullified patent |
Owner name: DUSS |