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
Casing connection
摘要
申请公布号
US1778662(A)
申请公布日期
1930.10.14
申请号
US19290358283
申请日期
1929.04.26
申请人
BILLIE CLARK
发明人
CLARK BILLIE
分类号
E21B31/20
主分类号
E21B31/20
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Contact structure for semiconductor device
Semiconductor integrated circuit devices adapted for automatic design and method of arranging such devices
Semiconductor devices
Polycarbonate, copolycarbonate resin compositions and preparing method thereof
Polymers having terminal hydroxyl, aldehyde, or alkylamino substituents and derivatives thereof
Binder formulation for producing pigment
Methods of inhibiting invasion and metastasis of malignant solid tumors
Laundry softener concentrates
Method of producing stepped wall interconnects and gates
Method of fabricating a semiconductor memory device
Method of giving a substantially flat surface of a semiconductor device through a polishing operation
Process for fabricating a thin film transistor semiconductor device
Method of producing an electro-optical device
Metod of gene transfer using retrotransposons
Method of reducing registration error in exposure step of semiconductor device
Methods and compositions for reducing body odor
Rare earth supported catalyst useful for preparation of alkanolamines and process for preparing same
Process for applying protective and decorative coating on an article
Method for repositioning produce during washing
Infusion systems and methods for introducing fluids into the body within a desired temperature range
