JPS521933A - Tunnel excavator - Google Patents
Tunnel excavatorInfo
- Publication number
- JPS521933A JPS521933A JP7570775A JP7570775A JPS521933A JP S521933 A JPS521933 A JP S521933A JP 7570775 A JP7570775 A JP 7570775A JP 7570775 A JP7570775 A JP 7570775A JP S521933 A JPS521933 A JP S521933A
- Authority
- JP
- Japan
- Prior art keywords
- tunnel excavator
- excavator
- tunnel
- 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 |
---|---|---|---|
JP7570775A JPS521933A (en) | 1975-06-23 | 1975-06-23 | Tunnel excavator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7570775A JPS521933A (en) | 1975-06-23 | 1975-06-23 | Tunnel excavator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS521933A true JPS521933A (en) | 1977-01-08 |
Family
ID=13583950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7570775A Pending JPS521933A (en) | 1975-06-23 | 1975-06-23 | Tunnel excavator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS521933A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7954822B2 (en) | 2004-01-09 | 2011-06-07 | Nippon Piston Ring Co., Ltd. | Wire material for coil expander and coil expander |
-
1975
- 1975-06-23 JP JP7570775A patent/JPS521933A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7954822B2 (en) | 2004-01-09 | 2011-06-07 | Nippon Piston Ring Co., Ltd. | Wire material for coil expander and coil expander |
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