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
RINGROMSVENTIL
摘要
申请公布号
NO169913(B)
申请公布日期
1992.05.11
申请号
NO19840005058
申请日期
1984.12.17
申请人
HYDRIL CO
发明人
HYNES JOSEPH H;BURTON JAMES A
分类号
E21B;E21B33/06;(IPC1-7):E21B33/06
主分类号
E21B
代理机构
代理人
主权项
地址
您可能感兴趣的专利
APPARATUS FOR ASSEMBLING AND RESISTANCE SPOT WELDING
FLYING SHEARS
METHOD AND APPARATUS FOR CUTTING TUBES TO BLANKS
LINE FOR PRODUCING METALLIC SHOTS
COMPOSITION FOR PRODUCING SHELL CASTING MOULDS AND CORES WITH USE OF HEATED TOOLING
MIXTURE FOR PRODUCING CASTING SEMIPERMANENT MOULDS BY PRESSING METHOD
DIE FOR DIRECT EXTRUSION
METHOD OF WASHING VESSEL INTERIOR SURFACE
VIBRATOR
METHOD OF AUTOMATIC STOPPING OF GRINDING FANS
TUBULAR (BALL) MILL DRUM INTERIOR SURFACE LINING
APPARATUS FOR CARRYING OUT PHYSICO-CHEMICAL PROCESS UNDER PRESSURE
SETTLER
METHOD OF TREATING FOAM SUSPENSION
APPARATUS FOR AUTOMATIC CONTROL OF RECTIFICATION COLUMN
SHOT
MOP
METHOD OF PRODUCING FAT ADDITIVE FOR ANIMALS FROM OIL-FAT PRODUCTION WASTES SUCH AS FATTY ACID CALCIUM SALTS CONCENTRATES
METHOD OF CONTROLLING ARMENIAN SCALE INSECTS
MASS EXCHANGE PLATE