JPS521933A - Tunnel excavator - Google Patents

Tunnel excavator

Info

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
Application number
JP7570775A
Other languages
Japanese (ja)
Inventor
Toshio Yamada
Kuniaki Shimizu
Hiroshi Nishino
Chiaki Kojima
Masao Fukada
Hidekazu Aoki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Komatsu Ltd
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Komatsu Ltd
Priority to JP7570775A priority Critical patent/JPS521933A/en
Publication of JPS521933A publication Critical patent/JPS521933A/en
Pending legal-status Critical Current

Links

JP7570775A 1975-06-23 1975-06-23 Tunnel excavator Pending JPS521933A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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