JPS53140803A - Method of drilling bottommenlarged hole - Google Patents
Method of drilling bottommenlarged holeInfo
- Publication number
- JPS53140803A JPS53140803A JP5421377A JP5421377A JPS53140803A JP S53140803 A JPS53140803 A JP S53140803A JP 5421377 A JP5421377 A JP 5421377A JP 5421377 A JP5421377 A JP 5421377A JP S53140803 A JPS53140803 A JP S53140803A
- Authority
- JP
- Japan
- Prior art keywords
- bottommenlarged
- drilling
- hole
- drilling bottommenlarged
- bottommenlarged hole
- Prior art date
- 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.)
- Pending
Links
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5421377A JPS53140803A (en) | 1977-05-13 | 1977-05-13 | Method of drilling bottommenlarged hole |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5421377A JPS53140803A (en) | 1977-05-13 | 1977-05-13 | Method of drilling bottommenlarged hole |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS53140803A true JPS53140803A (en) | 1978-12-08 |
Family
ID=12964260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5421377A Pending JPS53140803A (en) | 1977-05-13 | 1977-05-13 | Method of drilling bottommenlarged hole |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS53140803A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002322890A (en) * | 2001-04-24 | 2002-11-08 | Daiwa Kiko Kk | Expansively digging method for pedestal and expanded head used therefor |
JP2014237939A (en) * | 2013-06-06 | 2014-12-18 | 株式会社シロタ | Center drilling excavator |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5024645U (en) * | 1973-06-29 | 1975-03-20 |
-
1977
- 1977-05-13 JP JP5421377A patent/JPS53140803A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5024645U (en) * | 1973-06-29 | 1975-03-20 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002322890A (en) * | 2001-04-24 | 2002-11-08 | Daiwa Kiko Kk | Expansively digging method for pedestal and expanded head used therefor |
JP2014237939A (en) * | 2013-06-06 | 2014-12-18 | 株式会社シロタ | Center drilling excavator |
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