Title:
HYDRAULICALLY CONTROLLED VIBROHAMMER
United States Patent 3529681
Inventors:
Berrie, Emile Georges
Publication Date:
09/22/1970
Export Citation:
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Assignee:
Emile, Georges Berrie
Primary Class:
173/200
Other Classes:
60/537, 92/117R, 173/125
International Classes:
B25D9/12; E02D7/10; E02D7/18; E02D7/26; B25D9/00; E02D7/00; (IPC1-7): E02D7/02; E21B1/02
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US Patent References:
3009522Pile-driver with a hydraulically operated pile rammer
0904528N/A




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