JPS5637992A - Expansion device in multistage boom - Google Patents

Expansion device in multistage boom

Info

Publication number
JPS5637992A
JPS5637992A JP11312979A JP11312979A JPS5637992A JP S5637992 A JPS5637992 A JP S5637992A JP 11312979 A JP11312979 A JP 11312979A JP 11312979 A JP11312979 A JP 11312979A JP S5637992 A JPS5637992 A JP S5637992A
Authority
JP
Japan
Prior art keywords
expansion device
multistage boom
boom
multistage
expansion
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
JP11312979A
Other languages
Japanese (ja)
Inventor
Masaaki Inaoka
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.)
Shinmaywa Industries Ltd
Original Assignee
Shin Meiva Industry 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 Shin Meiva Industry Ltd filed Critical Shin Meiva Industry Ltd
Priority to JP11312979A priority Critical patent/JPS5637992A/en
Publication of JPS5637992A publication Critical patent/JPS5637992A/en
Pending legal-status Critical Current

Links

Landscapes

  • Jib Cranes (AREA)
JP11312979A 1979-09-03 1979-09-03 Expansion device in multistage boom Pending JPS5637992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11312979A JPS5637992A (en) 1979-09-03 1979-09-03 Expansion device in multistage boom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11312979A JPS5637992A (en) 1979-09-03 1979-09-03 Expansion device in multistage boom

Publications (1)

Publication Number Publication Date
JPS5637992A true JPS5637992A (en) 1981-04-11

Family

ID=14604269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11312979A Pending JPS5637992A (en) 1979-09-03 1979-09-03 Expansion device in multistage boom

Country Status (1)

Country Link
JP (1) JPS5637992A (en)

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