FR2225613B1 - - Google Patents
Info
- Publication number
- FR2225613B1 FR2225613B1 FR7409881A FR7409881A FR2225613B1 FR 2225613 B1 FR2225613 B1 FR 2225613B1 FR 7409881 A FR7409881 A FR 7409881A FR 7409881 A FR7409881 A FR 7409881A FR 2225613 B1 FR2225613 B1 FR 2225613B1
- 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
-
- 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
-
- 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
- E21B10/56—Button-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)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732318928 DE2318928A1 (en) | 1973-04-14 | 1973-04-14 | IMPACT DRILL BIT |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2225613A1 FR2225613A1 (en) | 1974-11-08 |
FR2225613B1 true FR2225613B1 (en) | 1977-10-07 |
Family
ID=5878113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7409881A Expired FR2225613B1 (en) | 1973-04-14 | 1974-03-22 |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT329486B (en) |
BE (1) | BE812832A (en) |
DE (1) | DE2318928A1 (en) |
FR (1) | FR2225613B1 (en) |
IT (1) | IT1009747B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19811887A1 (en) * | 1998-03-18 | 1999-09-23 | Plica Werkzeugfabrik Ag Mollis | Hammer drilling tool |
-
1973
- 1973-04-14 DE DE19732318928 patent/DE2318928A1/en active Pending
-
1974
- 1974-03-22 FR FR7409881A patent/FR2225613B1/fr not_active Expired
- 1974-03-26 BE BE142449A patent/BE812832A/en unknown
- 1974-03-29 AT AT261474A patent/AT329486B/en not_active IP Right Cessation
- 1974-04-09 IT IT2111674A patent/IT1009747B/en active
Also Published As
Publication number | Publication date |
---|---|
IT1009747B (en) | 1976-12-20 |
AT329486B (en) | 1976-05-10 |
ATA261474A (en) | 1975-08-15 |
FR2225613A1 (en) | 1974-11-08 |
BE812832A (en) | 1974-07-15 |
DE2318928A1 (en) | 1974-10-24 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |