BE482754A - - Google Patents
Info
- Publication number
- BE482754A BE482754A BE482754DA BE482754A BE 482754 A BE482754 A BE 482754A BE 482754D A BE482754D A BE 482754DA BE 482754 A BE482754 A BE 482754A
- Authority
- BE
- Belgium
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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/52—Machines incorporating two or more of the slitting means according to groups E21C25/02, E21C25/06, E21C25/16, E21C25/20 and E21C25/22
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1006435T | 1948-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE482754A true BE482754A (US20030199744A1-20031023-C00003.png) | 1948-06-15 |
Family
ID=10270787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE482754D BE482754A (US20030199744A1-20031023-C00003.png) | 1948-01-14 | 1948-05-28 |
Country Status (5)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2780452A (en) * | 1952-03-27 | 1957-02-05 | Sonapar Soc De Participation S | Rock cutting machine having slot cutting and slot engaging guide means |
| DE1264367B (de) * | 1966-04-22 | 1968-03-28 | Gewerk Eisenhuette Westfalia | Vorkohlgeraet zum Auffahren von einer vorgesetzten Strecke und/oder einem Maschinenstall |
| CN110242293A (zh) * | 2019-06-21 | 2019-09-17 | 辽宁工程技术大学 | 一种旋挖式截煤装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE257965C (US20030199744A1-20031023-C00003.png) * | 1912-04-22 | |||
| DE600088C (de) * | 1932-11-18 | 1934-07-14 | Jakob Glaser | Schraemmaschine |
-
1948
- 1948-01-14 FR FR1006435D patent/FR1006435A/fr not_active Expired
- 1948-05-28 BE BE482754D patent/BE482754A/xx unknown
- 1948-06-22 NL NL141100A patent/NL73850C/xx active
-
1949
- 1949-11-03 GB GB28134/49A patent/GB670816A/en not_active Expired
-
1950
- 1950-10-03 DE DES20365A patent/DE892735C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1006435A (fr) | 1952-04-23 |
| GB670816A (en) | 1952-04-23 |
| NL73850C (US20030199744A1-20031023-C00003.png) | 1953-04-15 |
| DE892735C (de) | 1953-10-08 |
