首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
TOOL COMPONENT
摘要
申请公布号
GB8422319(D0)
申请公布日期
1984.10.10
申请号
GB19840022319
申请日期
1984.09.04
申请人
DE BEERS INDUSTRIAL DIAMOND DIVISION (PTY) LTD
发明人
分类号
E21B10/56;E21B10/567;E21C35/18;E21C35/183
主分类号
E21B10/56
代理机构
代理人
主权项
地址
您可能感兴趣的专利
ELECTRONIC WATCHES
FREQUENCY CONTROL SYSTEM IN SATELITE COMMUNICTION
WASTE WATER TREATMENT APPARATUS USING SUPPERSONIC WAVE
DEODORIZING APPARATUS
METHOD OF PRODUCING CATIONNEXCHANGE MEMBRANE
SENSITIVE BODY FURNISHING DEVICE FOR ELECTROPHOTOGRAPHIC COPYING MACHI NE OF TRANSFER TYPE
METHOD OF FORMING SLIDING SURFACE IN VACUUM APPARATUS
DRIVING CIRCUIT
RADAR SIGNAL TREATMENT EQUIPMENT
BATTERY
EXCITING COIL FOR ELECTRON MICROSCOPE AND OTHERS
CONVERGENCE COLORING SHEAR DETECTING METHOD AND ITS UNIT
LEAKAGE BREAKER
DEVICE FOR MEASURING THICKNESS OR LIKE OF DIELECTRIC MATERIAL
SEAL DEVICE FOR SHIELD EXCAVATOR
WATER TREATMENT METHOD
HOT EXTRUSION DIES
MAGNETRON
MEMORY UNIT
TELEVISION RECEIVER
