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New design of the gripping part of automatic drilling tongs with two-stage self-adjustment of the serrated elements
N. P. Umanchik, V. P. Belugin, A. G. ShestovVolume:
25
Language:
english
Pages:
4
DOI:
10.1007/bf01157296
Date:
November, 1989
File:
PDF, 504 KB
english, 1989