クレーンブーム先端の削孔機取り付け装置

Title:

クレーンブーム先端の削孔機取り付け装置

Document Type and Number:

Japanese Patent JP6481920

Kind Code:

B2

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Inventors:

Kosuke Yokoyama
Yusuke Tanaka
Toshihiko Yamamoto

Application Number:

JP2014011097A

Publication Date:

March 13, 2019

Filing Date:

January 24, 2014

Export Citation:

Assignee:

Yokoyama foundation work
Sanwa Equipment Co., Ltd.

International Classes:

E21B3/00; E02F9/00; E21B1/00

Domestic Patent References:

Foreign References:

US4199033

Attorney, Agent or Firm:

Rita Ishii
Masao Tanaka

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