JPS5273506A - Airtightness retaining apparatus - Google Patents

Airtightness retaining apparatus

Info

Publication number
JPS5273506A
JPS5273506A JP14899375A JP14899375A JPS5273506A JP S5273506 A JPS5273506 A JP S5273506A JP 14899375 A JP14899375 A JP 14899375A JP 14899375 A JP14899375 A JP 14899375A JP S5273506 A JPS5273506 A JP S5273506A
Authority
JP
Japan
Prior art keywords
retaining apparatus
airtightness retaining
airtightness
retaining
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.)
Granted
Application number
JP14899375A
Other languages
English (en)
Japanese (ja)
Other versions
JPS557498B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Kakou Yamaguchi
Shinichi Takeo
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.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
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 Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP14899375A priority Critical patent/JPS5273506A/ja
Publication of JPS5273506A publication Critical patent/JPS5273506A/ja
Publication of JPS557498B2 publication Critical patent/JPS557498B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP14899375A 1975-12-13 1975-12-13 Airtightness retaining apparatus Granted JPS5273506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14899375A JPS5273506A (en) 1975-12-13 1975-12-13 Airtightness retaining apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14899375A JPS5273506A (en) 1975-12-13 1975-12-13 Airtightness retaining apparatus

Publications (2)

Publication Number Publication Date
JPS5273506A true JPS5273506A (en) 1977-06-20
JPS557498B2 JPS557498B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-02-26

Family

ID=15465290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14899375A Granted JPS5273506A (en) 1975-12-13 1975-12-13 Airtightness retaining apparatus

Country Status (1)

Country Link
JP (1) JPS5273506A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
JPS557498B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-02-26

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