JPS5647354B2 - - Google Patents
Info
- Publication number
- JPS5647354B2 JPS5647354B2 JP4034079A JP4034079A JPS5647354B2 JP S5647354 B2 JPS5647354 B2 JP S5647354B2 JP 4034079 A JP4034079 A JP 4034079A JP 4034079 A JP4034079 A JP 4034079A JP S5647354 B2 JPS5647354 B2 JP S5647354B2
- Authority
- JP
- Japan
- 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
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4034079A JPS55132894A (en) | 1979-04-05 | 1979-04-05 | Rotary bit for enlarging bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4034079A JPS55132894A (en) | 1979-04-05 | 1979-04-05 | Rotary bit for enlarging bottom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55132894A JPS55132894A (en) | 1980-10-16 |
| JPS5647354B2 true JPS5647354B2 (en) | 1981-11-09 |
Family
ID=12577893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4034079A Granted JPS55132894A (en) | 1979-04-05 | 1979-04-05 | Rotary bit for enlarging bottom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55132894A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58222287A (en) * | 1982-06-16 | 1983-12-23 | 日立建機株式会社 | Bottom enlarged bit due to earth drill method and bottom enlarged bucket for constructing same |
| CN102383732B (en) * | 2011-07-20 | 2015-05-20 | 上海广联建设发展有限公司 | Sectional type hydraulic foundation expansion drilling bucket |
-
1979
- 1979-04-05 JP JP4034079A patent/JPS55132894A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55132894A (en) | 1980-10-16 |