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Title:
PIT DRILLING MACHINE
Document Type and Number:
Japanese Patent JPS62211490
Kind Code:
A
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Inventors:
UNO YOSHIHIRO
ITONAGA HIROSHI
Application Number:
JP5108986A
Publication Date:
September 17, 1987
Filing Date:
March 07, 1986
Export Citation:
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Assignee:
HITACHI SHIPBUILDING ENG CO
International Classes:
E21D1/06; (IPC1-7): E21D1/06
Attorney, Agent or Firm:
Yoshihiro Morimoto



 
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