Shock absorber for cable tool drilling machines,申请号US19460710480-传众专利搜索

首页产品黄页商标征信

会员服务注册登录

法人/股东/高管

发明名称	Shock absorber for cable tool drilling machines
摘要
申请公布号	US2482114(A)	申请公布日期	1949.09.20
申请号	US19460710480	申请日期	1946.11.18
申请人	KEYSTONE DRILLER COMPANY	发明人	NIXON NICHOLAS N.
分类号	E21B1/02	主分类号	E21B1/02
代理机构		代理人
主权项
地址

您可能感兴趣的专利

Garbage separating apparatus and food waste disposal system including the same

Electro medical tool optimization system

Methods of hydrolyzing oligomers in hemicellulosic liquor

Chemical amplified photoresist composition

Resist composition, method of forming resist pattern and polymeric compound

Current collector plates of bulk-solidifying amorphous alloys

Fuel cell system and mobile body

Fuel cell system and driving method thereof

Apparatus for portable fuel cells and operating method thereof

Solid oxide fuel cell system performing different restart operations depending on operation temperature

Fuel cell system

Electrochemical device using magnesium element-containing negative electrode

Temperature dependent ionic gate

Battery thermal interfaces with microencapsulated phase change materials for enhanced heat exchange properties

Interconnection-less liquid fin design for battery cooling module

Quenching system

Heterocyclic compound and organic light-emitting device including the same

Compound having substituted anthracene ring structure and pyridoindole ring structure, and organic electroluminescent device

Biomass article and method of manufacturing