HYDRAULIC TYPE IMPACT MECHANISM

Title:

HYDRAULIC TYPE IMPACT MECHANISM

Document Type and Number:

Japanese Patent JPS60156897

Kind Code:

A

Inventors:

OOTA AKINORI

Application Number:

JP1257284A

Publication Date:

August 17, 1985

Filing Date:

January 26, 1984

Export Citation:

Assignee:

FURUKAWA KOGYO KK

International Classes:

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

Domestic Patent References:

Attorney, Agent or Firm:

Tetsuya Mori

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