EARTH SUPPORTING MATERIAL AND END METAL PART USED FOR THE SAME
PROBLEM TO BE SOLVED: To provide an earth supporting material and an end metal part used for the same with which a temporary member required in a conventional case may be omitted, thus the number of the temporary members may be minimized even in a case which requires deep digging; and thereby, in a...
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Format: | Patent |
Sprache: | eng ; jpn |
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