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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH02145979
Kind Code:
U
More Like This:
WO/2005/058550HYDRAULIC HAMMERING DEVICE
JP2001017873METHOD AND APPARATUS FOR DETECTING OPERATION TIME AND STATUS OF USE OF HYDRAULIC STRIKING UNIT, SPECIALLY HYDRAULIC HAMMER
Application Number:
JP5148090U
Publication Date:
December 11, 1990
Filing Date:
May 17, 1990
Export Citation:
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International Classes:
B25D9/26; E21B1/00; E21B1/26; (IPC1-7): B25D9/26; E21C3/20
Domestic Patent References:
JP55178088B
JPS57174594A1982-10-27
JPS57205077A1982-12-16
JPS5871083A1983-04-27



 
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