JPS62200789U - - Google Patents
Info
- Publication number
- JPS62200789U JPS62200789U JP8782086U JP8782086U JPS62200789U JP S62200789 U JPS62200789 U JP S62200789U JP 8782086 U JP8782086 U JP 8782086U JP 8782086 U JP8782086 U JP 8782086U JP S62200789 U JPS62200789 U JP S62200789U
- Authority
- JP
- Japan
- Prior art keywords
- detector
- signal
- logarithmic converter
- auger
- detecting
- 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
- 238000010276 construction Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8782086U JPS62200789U (US07534539-20090519-C00280.png) | 1986-06-11 | 1986-06-11 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8782086U JPS62200789U (US07534539-20090519-C00280.png) | 1986-06-11 | 1986-06-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62200789U true JPS62200789U (US07534539-20090519-C00280.png) | 1987-12-21 |
Family
ID=30945377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8782086U Pending JPS62200789U (US07534539-20090519-C00280.png) | 1986-06-11 | 1986-06-11 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62200789U (US07534539-20090519-C00280.png) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8254143B2 (en) | 2008-01-10 | 2012-08-28 | Chengdu Huawei Symantec Technologies Co., Ltd. | Backplane and communication apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56135690A (en) * | 1980-03-27 | 1981-10-23 | Okumuragumi Doboku Kogyo Kk | Recording of cutting hole for earth auger |
JPS58164892A (ja) * | 1982-03-26 | 1983-09-29 | 日立建機株式会社 | ア−スオ−ガ掘進速度制御装置 |
-
1986
- 1986-06-11 JP JP8782086U patent/JPS62200789U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56135690A (en) * | 1980-03-27 | 1981-10-23 | Okumuragumi Doboku Kogyo Kk | Recording of cutting hole for earth auger |
JPS58164892A (ja) * | 1982-03-26 | 1983-09-29 | 日立建機株式会社 | ア−スオ−ガ掘進速度制御装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8254143B2 (en) | 2008-01-10 | 2012-08-28 | Chengdu Huawei Symantec Technologies Co., Ltd. | Backplane and communication apparatus |