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Title:
【考案の名称】削井機の掘削土砂排出ガイド構造
Document Type and Number:
Japanese Patent JPH0712590
Kind Code:
U
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Inventors:
Yushiro Shiraishi
Masaaki Kobayashi
Application Number:
JP4794693U
Publication Date:
March 03, 1995
Filing Date:
August 11, 1993
Export Citation:
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Assignee:
Aichi Corporation
International Classes:
E21B7/02; E21B15/00; (IPC1-7): E21B7/02; E21B15/00
Attorney, Agent or Firm:
Shogo Onishi



 
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