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
Drill
摘要
申请公布号
US1764989(A)
申请公布日期
1930.06.17
申请号
US19270175244
申请日期
1927.03.14
申请人
SIGNELL CARL A;OTTO SIGNELL
发明人
SIGNELL CARL A.;SIGNELL OTTO
分类号
E21B10/38
主分类号
E21B10/38
代理机构
代理人
主权项
地址
您可能感兴趣的专利
SILL PIECE MOVER ESPECIALLY FOR USE ON FLOORS OF INCLINED DOG HEADINGS
TRENCH DIGGING APPARATUS
PREPARATION OF POROUS ARAMIDE MEMBRANES
Process to purify proteins from cell systems
Neutralization of polycations in a chromatographic device for whole blood use.
Traction device
A process for the production of titanium concentrate having a chemical composition similar to ilmenite from highly impure anatase ores
Post-crop green tea-leaves mincer
A window stay assembly
Safety detaching hook
鞋类烘干器
一次性输液袋
一种新型的墙壁组合装置
不粘油洗碗机
一种自动整理床单装置
Remote control device for a television receiver
Electric soldering maschine with remote control
SAFETY BRAKE APPARATUS FOR AN ELEVATOR CAR OR COUNTERWEIGHT
Process and installation for semi-industrial making of very high quality cheese
Device for fixing in position of dies in the table of a tabletting machine
