Valve head structure for core barrels,申请号US19360093016-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	Valve head structure for core barrels
摘要
申请公布号	US2108949(A)	申请公布日期	1938.02.22
申请号	US19360093016	申请日期	1936.07.28
申请人	ELLIOTT CORE DRLLLING COMPANY	发明人	SNYDER LEONARD L.
分类号	E21B25/02	主分类号	E21B25/02
代理机构		代理人
主权项
地址

您可能感兴趣的专利

一种用于同时选中多条位线的列译码器

三轴综合振动/冲击试验装置

用补丁等来更新虚拟机

多功能生物活性水产饲料添加剂

用于检测和减轻欺诈性消息服务消息业务的方法、系统和计算机程序产品

轮式门座起重机、轮式门座起重机系统及移动轮式门座起重机的方法

Flux-cored wire for submerged arc welding of low-temperature steel and a method for welding using the same

BACK OPENING FOR AN AUTOMOTIVE VEHICLE

Ultrasonic probe deflection sensor

COMMUNICATION SYSTEM USING NETWORK BASE IP MOBILITY PROTOCOL, CONTROL DEVICE, ROUTER, AND ITS COMMUNICATION METHOD

Fixed center constant velocity joint with ball tracks having different funnel offsets

MOLECULAR SWITCHES AND METHODS FOR THEIR USE

Multi-cylinder internal combustion engine with independent cylinders

Azo pigment and pigment dispersion

METHODS OF PREPARING SILVER PARTICLES, SILVER PARTICLE INKS AND SILVER PARTICLE FILMS

Arrangement to adjust the position of a pick-up drum and a pressing element in an agricultural harvesting machine

MULTICAST FAST HANDOVER

A reproduction method, a program, a recording medium, and a drive apparatus