METHOD OF CRUSHING ROCK, ETC.

Title:

METHOD OF CRUSHING ROCK, ETC.

Document Type and Number:

Japanese Patent JPS61286492

Kind Code:

A

Inventors:

MAGATA KAZUO
SHOJI YOSHIMICHI
AOKI YOSHIHARU

Application Number:

JP12513785A

Publication Date:

December 17, 1986

Filing Date:

June 11, 1985

Export Citation:

Assignee:

TEKKEN CONSTR CO

International Classes:

E21C37/00; E21C37/16; (IPC1-7): E21C37/16

Domestic Patent References:

JPS4916602A	1974-02-14
JPS5438412A	1979-03-23

Attorney, Agent or Firm:

Morio Sada

Previous Patent: WET TYPE COMBINING DRY TYPE OR EITHER OF ONE ATMOSPHERIC PRESSURE UNDERWATER SYSTEM, AND CONSTITUENT...

Next Patent: METHOD OF CONSTRUCTING MANHOLE