Chongqing, CN
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Patent Grant
Southwest Technology and Engineering Research Institute
Feng Kang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent Grant
NO.59 RESEARCH INSTITUTE OF CHINA ORDNANCE INDUSTRY
Qiang Chen
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent Application
No.59 Research Institute of China Ordnance Industry
Qiang CHEN
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
