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经营范围
发明名称
PNEUMATIC EXCAVATION DEVICE
摘要
申请公布号
JPH03129085(A)
申请公布日期
1991.06.03
申请号
JP19890267473
申请日期
1989.10.13
申请人
OSAKA GAS CO LTD;KIYOOWA:KK
发明人
NAKAO TAKASHI;HAMANO SATOTAROU;KITAHAMA SADAO
分类号
E02F3/88;E02F3/92;E21B7/18
主分类号
E02F3/88
代理机构
代理人
主权项
地址
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