NL57439C - - Google Patents
Info
- Publication number
- NL57439C NL57439C NL57439DA NL57439C NL 57439 C NL57439 C NL 57439C NL 57439D A NL57439D A NL 57439DA NL 57439 C NL57439 C NL 57439C
- 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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL57439C true NL57439C (de) | 1900-01-01 |
Family
ID=1813786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL57439D NL57439C (de) |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL57439C (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE937101C (de) * | 1949-03-11 | 1955-12-29 | Gerhard Kuehne | Gesteinsbohrer fuer drehendes Bohren |
-
0
- NL NL57439D patent/NL57439C/xx active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE937101C (de) * | 1949-03-11 | 1955-12-29 | Gerhard Kuehne | Gesteinsbohrer fuer drehendes Bohren |