Hook for rotary well drilling,申请号US19370139441-传众专利搜索

首页产品黄页商标征信

会员服务注册登录

法人/股东/高管

发明名称	Hook for rotary well drilling
摘要
申请公布号	US2215049(A)	申请公布日期	1940.09.17
申请号	US19370139441	申请日期	1937.04.28
申请人	REGAN FORGE & ENGINEERING COMPANY	发明人	MINOR BURT S.
分类号	E21B19/04	主分类号	E21B19/04
代理机构		代理人
主权项
地址

您可能感兴趣的专利

PNEUMATIC REPLACEMENT PUMP

APPARATUS FOR THERMAL BREAKING OF ROCK WITH HIGH-TEMPERATURE GAS JET

APPARATUS FOR WITHDRAWING DUST AT BLAST HOLE DRILLING

METHOD OF MAKING SHELLS

DWELLING AREA WATER SUPPLY SYSTEM

METHOD OF ERECTING WALL IN SOIL

METHOD OF CONTINUOUS DISINTEGRATION OF FIBROUS MATERIAL

APPARATUS FOR DRAWING TEXTILE FIBRES TO STAPLING UNIT

GEETS METHOD FOR CLEANING SHIP FUEL TANKS

PIECE GRIPPING DEVICE FOR ELASTIC PLASTIC MATERIALS

METHOD OF GLUING METALLIC FOIL AND MINERAL WOOL PLATE

METHOD OF PREPARING CONJUGATE DIENES POLYMERS

METHOD OF PREPARING PYRROLIDONE CARBOXYLIC ACID

RAW MIXTURE FOR PRODUCING POROUS CLAY FILLER

METHOD OF PRODUCING POROUS LIGHT CONCRETE MIXTURE

GRANULATED SLAG PRODUCING UNIT

METHOD OF PRODUCING CEMENT CLINKER