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
SUBSURFACE SAFETY VALVE
摘要
申请公布号
GB8708897(D0)
申请公布日期
1987.05.20
申请号
GB19870008897
申请日期
1987.04.14
申请人
CAMCO INC
发明人
分类号
E21B34/00;E21B34/10
主分类号
E21B34/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
APPARATUS AND METHOD FOR MONITORING AUTOTROPH CULTIVATION
METHOD AND DEVICE FOR DETECTING A DETERIORATION IN THE STATE OF AN INSULATION IN AN OPERATING ELECTRIC MACHINE
SYSTEM AUTOMATION VIA AN ALARM SYSTEM
DEVICE FOR PROVIDING ACCESS TO A SPACE
ROTARY SEALING DEVICE, AND SEALING RING FOR SUCH A DEVICE
ZN-ION AND ZN-AIR HYBRID SECONDARY BATTERY ADAPTING ZN-ION BATTERY SYSTEM AND ZN-AIR BATTERY SYSTEM
METHOD AND SYSTEM FOR PROCESSING UNFERMENTED GRAIN SOLIDS AND UTILIZING THE PRODUCTS THEREOF
INTRAOCULAR IMPLANT CELL MIGRATION INHIBITION SYSTEM
CENTRIFUGE AND DISCHARGE PORT MEMBER OF A CENTRIFUGE FOR POWER REDUCTION
HEATING FURNACE AND HEATING DEVICE
METHOD AND APPARATUS FOR AUTOMATICALLY GENERATING CASE SCRIPTS
WAVE VECTOR MATCHED RESONATOR AND BUS WAVEGUIDE SYSTEM
PHARMACEUTICAL COMPOSITION COMPRISING EBASTINE AND FLUTICASONE
CONVEYER CHAIN
TWO STAGE ROTARY COMPRESSOR
INTERACTIVE DIGITAL INFORMATION DISPLAY APPARATUS FOR HOSPITAL
LAMP SAFTY DECICE OF ACTUAL LOADING TESTER
MAGNETIC FIELD SENSOR FOR TRACKING OPTIMIZED POSITION FOR POWER-PICK-UP
TORQUE CONVERTER FOR VEHICLES
USER FOLLOWING ROBOT
