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
Improved device for supporting the roofs of mine galleries
摘要
申请公布号
GB742850(A)
申请公布日期
1956.01.04
申请号
GB19530027732
申请日期
1953.10.08
申请人
SOCIETE D'ETUDES HYDRAULIQUES POUR L'INDUSTRIE MINIERE (S.E.H.I.M.)
发明人
分类号
E21D23/00
主分类号
E21D23/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
TUBING INJECTION SYSTEM FOR OILFIELD OPERATIONS
Method for determining the signal propagation properties of a wireless transmittable signal
Power supply device with detection of malfunctioning
Method for generating non-visible window edges in image compositing systems
Method and device for applying tubular labels to articles
POWDER COATINGS BASED ON BRANCHED OLIGOESTERS AND TRIAZOLE BLOCKED POLYISOCYANATES
Particle trap in a cooling system for gas turbine engines
CONTINUOUSLY OPERATED CLOSED-LOOP DECONTAMINATION SYSTEM AND METHOD
MILD ANTIMICROBIAL LIQUID CLEANSING FORMULATIONS
A drum servo system
Image processing apparatus and image processing method, and storage media storing said method as a program
单片高频压控振荡器微调电路
DISC READER WITH AUTOMATIC CLOSING TRAY
Method and apparatus for determining dip angle, and horizontal and vertical conductivities
Barrel slip and retrievable packer therewith
PIT EMULSIONS
FLUIDIZED BED REACTOR
MEMORY MANAGEMENT UNIT FOR JAVA ENVIRONMENT COMPUTERS AND METHOD THEREFOR
Lifting column provided with a linear transducer
Conveyor
