JPH01180075U - - Google Patents

Info

Publication number
JPH01180075U
JPH01180075U JP7760188U JP7760188U JPH01180075U JP H01180075 U JPH01180075 U JP H01180075U JP 7760188 U JP7760188 U JP 7760188U JP 7760188 U JP7760188 U JP 7760188U JP H01180075 U JPH01180075 U JP H01180075U
Authority
JP
Japan
Prior art keywords
valve
negative pressure
partition wall
box
safety
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
JP7760188U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP7760188U priority Critical patent/JPH01180075U/ja
Publication of JPH01180075U publication Critical patent/JPH01180075U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Safety Valves (AREA)
JP7760188U 1988-06-11 1988-06-11 Pending JPH01180075U (US07368563-20080506-C00056.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7760188U JPH01180075U (US07368563-20080506-C00056.png) 1988-06-11 1988-06-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7760188U JPH01180075U (US07368563-20080506-C00056.png) 1988-06-11 1988-06-11

Publications (1)

Publication Number Publication Date
JPH01180075U true JPH01180075U (US07368563-20080506-C00056.png) 1989-12-25

Family

ID=31302578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7760188U Pending JPH01180075U (US07368563-20080506-C00056.png) 1988-06-11 1988-06-11

Country Status (1)

Country Link
JP (1) JPH01180075U (US07368563-20080506-C00056.png)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814560B2 (ja) * 1976-06-28 1983-03-19 モスコヴスキイ ゴルニイ インステイチユ−ト 石炭層からのガスおよび/又は炭塵の流出を減少させる方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814560B2 (ja) * 1976-06-28 1983-03-19 モスコヴスキイ ゴルニイ インステイチユ−ト 石炭層からのガスおよび/又は炭塵の流出を減少させる方法

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