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发明名称
IRON AND STEEL HARDENING MEANS
摘要
申请公布号
CA332156(A)
申请公布日期
1933.05.02
申请号
CAD332156
申请日期
申请人
DEUTSCHE GOLD- UND SILBER-SCHEIDEANSTALT VORMALS ROESSLER
发明人
HERMANN FREUDENBERG
分类号
主分类号
代理机构
代理人
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