JPH0311999U - - Google Patents

Info

Publication number
JPH0311999U
JPH0311999U JP7342589U JP7342589U JPH0311999U JP H0311999 U JPH0311999 U JP H0311999U JP 7342589 U JP7342589 U JP 7342589U JP 7342589 U JP7342589 U JP 7342589U JP H0311999 U JPH0311999 U JP H0311999U
Authority
JP
Japan
Prior art keywords
propulsion device
reaction fin
fin
helical
ship
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
JP7342589U
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 JP7342589U priority Critical patent/JPH0311999U/ja
Publication of JPH0311999U publication Critical patent/JPH0311999U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP7342589U 1989-06-22 1989-06-22 Pending JPH0311999U (th)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7342589U JPH0311999U (th) 1989-06-22 1989-06-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7342589U JPH0311999U (th) 1989-06-22 1989-06-22

Publications (1)

Publication Number Publication Date
JPH0311999U true JPH0311999U (th) 1991-02-06

Family

ID=31612227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7342589U Pending JPH0311999U (th) 1989-06-22 1989-06-22

Country Status (1)

Country Link
JP (1) JPH0311999U (th)

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