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
摘要
申请公布号
SU448290(A1)
申请公布日期
1974.10.30
申请号
SU19731929709
申请日期
1973.06.11
申请人
发明人
分类号
E21C37/18;(IPC1-7):E21C37/18;E21C19/00;E21C21/00
主分类号
E21C37/18
代理机构
代理人
主权项
地址
您可能感兴趣的专利
PRO-CYTOTOXIC DRUG CONJUGATES FOR ANTICANCER THERAPY
CENTRE DOUBLE BREAK DISCONNECTING SWITCH PHASE
PROCESS AND DEVICE FOR MAKING A PIPE
Improved method for rinsing and drying a wafer
WATER DISTRIBUTION SYSTEM WITH WATER SAVING DIFFUSERS
Reinforced fabrics
Bremseanordning til in-line skøjter
Selvslukkende polymersammensætninger
Antikorrosiv coatingsammensætning
Handicapkran
Selvklæbende etikette
APPARATUS FOR OPTICAL LOGIC AND SWITCHING FUNCTIONS
FREQUENCY AGILE MODULATOR
DEVICE FOR CONTROL OF FLOW OF COOLING MEDIUM
APPARATUS AND METHOD FOR RAISING AND LOWERING A PISTON IN A PISTON-CYLINDER ARRANGEMENT IN A DERRICK
ALLOY STEEL COMPOSITION AND CHAIN PRODUCTS FABRICATED IN SUCH ALLOY STEEL
A COOLANT FOR USE AT HIGH OPERATING TEMPERATURES
PROCESS FOR PREPARING READILY DISPERSIBLE WATER-SOLUBLE CELLULOSIC POLYMERS
FOODSTUFF PACKAGE, PROCESS AND DEVICE FOR HEAT-TREATING A FOODSTUFF VACUUM-PACKED IN SUCH A PACKAGE
METHOD AND DEVICE ACHIEVING A FLOW OF STOCK IN A FORMING TANK