【考案の名称】ヒートパイプ埋設用穴明工具 - Nippon Telegraph and Telephone Corporation

Title:

【考案の名称】ヒートパイプ埋設用穴明工具

Document Type and Number:

Japanese Patent JPH0712473

Kind Code:

Y2

Inventors:

Nagasawa alone
Hisaka Annaka
Shoji Nagahara

Application Number:

JP100089U

Publication Date:

March 22, 1995

Filing Date:

January 09, 1989

Export Citation:

Assignee:

Nippon Telegraph and Telephone Corporation

International Classes:

E21B1/02; E21B7/26; (IPC1-7): E21B1/02; E21B7/26

Attorney, Agent or Firm:

Wakabayashi Tadashi

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