【考案の名称】打撃装置

Title:

【考案の名称】打撃装置

Document Type and Number:

Japanese Patent JPS5924491

Kind Code:

U

Inventors:

Norihisa Muto
Matsumoto Minoru
Yoshiaki Masaaki

Application Number:

JP11736782U

Publication Date:

February 15, 1984

Filing Date:

August 03, 1982

Export Citation:

International Classes:

E21B1/38; E21B1/00; E21B1/26; (IPC1-7): E21C3/04; E21C3/20

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