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
Packing
摘要
申请公布号
US1750886(A)
申请公布日期
1930.03.18
申请号
US19290394451
申请日期
1929.09.23
申请人
GRANGER PAUL H
发明人
GRANGER PAUL H.
分类号
E21B33/126
主分类号
E21B33/126
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD OF PREPARING QUARRY LEVELS
SYSTEM FOR REMOTE CONTROL OF CUTTER-LOADER IN COAL BED
DEVICE FOR LOCATING TOOL IN WELL
PIPE GRIPPER
APPARATUS FOR PLACING ELONGATED CONSTRUCTION ELEMENTS IN SOIL
INJECTION COMPOSITION
INJECTOR FOR FORCING STABILIZING SOLUTION INTO SOIL
APPARATUS FOR SUPPRESSING VIBRATIONS OF SPLIT FRAMEWORKS OF BRIDGE
ZINC-PLATING ELECTROLYTE
ZINC-PLATING ELECTROLYTE
METHOD OF THERMAL TREATMENT OF HIGH-STRENGTH STAINLESS MARTEN-SITE-AGED STEELS
METHOD OF REDUCING METAL OXIDES
METHOD OF PREPARING OF STARCH-CONTAINING RAW MATERIAL FOR ALCOHOLIC FERMENTATION
HORIZONTAL COUNTER FLOW MULTISTEP EXTRACTOR
CAST IRON
BEARING CIRCULAR BEAM OF BLAST FURNACE
COUNTER FLOW EXTRACTOR
METHOD OF PRODUCING POLYETHYLENETEREPHTHALATE
METHOD OF PRODUCING UREA-FORMALDEHYDE BINDER
METHOD OF PREPARING 2-NITROPYRIDINE-N-OXIDE