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
Wellhead seal
摘要
申请公布号
US3050127(A)
申请公布日期
1962.08.21
申请号
US19590830504
申请日期
1959.07.30
申请人
SHELL OIL COMPANY
发明人
FOSTER KENNETH W.;NEWMAN NICHOLAS B.;GEER RONALD L.
分类号
E21B33/035;E21B33/037;E21B33/043
主分类号
E21B33/035
代理机构
代理人
主权项
地址
您可能感兴趣的专利
IMAGE FORMING APPARATUS
POWER UNIT, POWER SUPPLY CONTROL METHOD AND PROGRAM
IMAGE-FORMING DEVICE
JOB EXECUTION DEVICE AND METHOD FOR PROCESSING AUTHENTICATION IN IT
ENCAPSULATION FOR ORGANIC DEVICE
CONNECTING AC-COUPLED SYSTEMS AND DC-COUPLED SYSTEMS
VIDEO DATA PRESENTING DEVICE AND VIDEO REPRODUCING UNIT
ACOUSTIC WAVE RESONATOR, FILTER, AND COMMUNICATIONS APPARATUS
PIEZOELECTRIC VIBRATION DEVICE
RECEIVER OF COMMUNICATION SYSTEM FOR VEHICLE
SOLID-STATE IMAGE PICKUP DEVICE
COMMODITY RETRIEVAL AND PURCHASE SUPPORT SYSTEM AND CONTROL METHOD OF COMMODITY RETRIEVAL AND PURCHASE SUPPORT SYSTEM
AUTHENTICATION DEVICE, PROGRAM OF TERMINAL DEVICE, IMAGE FORMING APPARATUS, TERMINAL DEVICE CONTROL METHOD, AND IMAGE FORMING APPARATUS CONTROL METHOD
POWER SUPPLY DEVICE FOR VEHICLE, AND VEHICLE MOUNTED WITH THE SAME
PLANAR LIGHT SOURCE DEVICE
THIN FOOD MATERIAL SUCH AS PASTA OR NOODLE WHERE CHARACTER OF FESTIVE OCCASION, GOOD LUCK INVITATION, ENCOURAGEMENT OR THE LIKE IS CARVED, AND STRUCTURE OF FOOD PACKAGING PRODUCT CARVED WITH CHARACTER OF THE FESTIVE OCCASION, GOOD LUCK INVITATION, ENCOURAGEMENT OR THE LIKE
Fraud prevention and detection for online advertising
Durable premium wood boards and process for producing the same
Activatable laminate structures
Compositions and methods for enhancing the efficacy of IL-2 mediated immune responses
