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
Seal assembly
摘要
申请公布号
GB2030238(A)
申请公布日期
1980.04.02
申请号
GB19790028689
申请日期
1979.08.17
申请人
DRESSER INDUSTRIES INC
发明人
分类号
E21B33/12;F16J15/32;(IPC1-7):F16J15/10
主分类号
E21B33/12
代理机构
代理人
主权项
地址
您可能感兴趣的专利
LASER BEAM EMITTING DEVICE
REVERSE ROLLING MILL AND ROLLING METHOD
CUP HOLDER FOR WASHING EYE
DEPOSIT PROTECTIVE MEMBER FOR LASER BEAM INTRODUCING OPTICAL WINDOW OF LASER ABLATION DEVICE, AND METHOD AND DEVICE OF LASER ABLATION
DAMAGE PREVENTION METHOD FOR OPTICAL FIBER AND OPTICAL FIBER
DECOMPOSITION METHOD FOR METALLOCYANO COMPLEX
ULTRASONIC IMAGING SYSTEM AND METHOD USING QUANTUM WELL ELEMENT ENABLING OPTICAL INTERCONNECTION
BUCKLE
WASTEWATER TREATING METHOD
GARBAGE SUPPLIER IN GARBAGE DISPOSAL FACILITIES
GARBAGE DISPOSER
INTERMEDIATE PLATE APPARATUS
FOREIGN MATTER REMOVING MECHANISM AND MEDAL WASHING DEVICE
GAME MACHINE
DEVICE AND METHOD FOR DETECTING AND PREVENTING DISHONEST PLAY IN REEL TYPE GAME MACHINE
FED MEDAL DETECTOR FOR GAME MACHINE
GAME MACHINE AND PROCESSING METHOD AT THE TIME OF ACTIVATION TIME THEREFOR
DESK WITH PANEL
GAME MACHINE
DEVICE FOR SCREENING SHAPE
