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
Rock drill
摘要
申请公布号
US2115911(A)
申请公布日期
1938.05.03
申请号
US19350021025
申请日期
1935.05.11
申请人
SULLIVAN MACHINERY COMPANY
发明人
GARTIN ELMER G.
分类号
E21B19/081
主分类号
E21B19/081
代理机构
代理人
主权项
地址
您可能感兴趣的专利
DISK CUTTER HOLDER
MACHINE FOR ASSEMBLING AND REPAIRING CHAINS
NC LATHE
METHOD OF MAKING PARTS FROM SHEET WORKPIECES
GRINDING DEVICE
THERMITE MOULD
GRIPPING APPARATUS FOR TRANSPORTATION AND SOLDERING OF MICROCIRCUITS
ARRANGEMENT FOR FEEDING WORKPIECES TO DIE PRESS AND EVACUATING WORKPIECES THEREFROM
METHOD AND TOOL FOR EXPANDING PIPES
PIPE-STRAIGHTENING TOOL
METHOD OF PREPARING STEEL STRIP FOR ROLLING PROCESS
VIBRATION-IMPACT MACHINE
METHOD FOR POTASSIUM-CONTAINING ORES FLOTATION
METHOD OF OIL RECOVERY FROM OIL-BEARING SAND
DEVICE FOR UNLOADING LOOSE MATERIALS
MOVABLE CRUSHING UNIT AND THE METHOD OF ITS ASSEMBLY
FILTER FOR REMOVING MECHANICAL IMPURITIES FROM NATURAL WATER AND SEWAGE
METHOD FOR PROPHYLAXIS OF FETAL MEMBRANE DETENTION IN COWS
DRINKING BAWL
DEVICE FOR GRINDING MATERIALS