Electric heater for oil wells,申请号US19420436499-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	Electric heater for oil wells
摘要
申请公布号	US2302774(A)	申请公布日期	1942.11.24
申请号	US19420436499	申请日期	1942.03.27
申请人	JARVIS THAD L	发明人	JARVIS THAD L.
分类号	E21B36/04	主分类号	E21B36/04
代理机构		代理人
主权项
地址

您可能感兴趣的专利

Device for crosscutting lengths of wood

IMPACT-REINFORCING AGENT HAVING MULTILAYERED STRUCTURE, METHOD FOR PREPARARING THE SAME, AND THERMOPLASTIC RESIN COMPRISING THE SAME

Ewiger Kalendermechanismus

STICK-TYPE COSMETIC CONTAINER

High precision Hall sensor with multiple contact pairs

Device for brewing beer

ANTIBACTERIAL DENTIFRICE EXHIBITING ANTIPLAQUE AND BREATH FRESHENING PROPERTIES

ARRANGEMENT FOR UNDERRUN PROTECTION IN VEHICLES

A charge pump with current peak noise reduction

Semiconductor wafer having a thin die and tethers

Linear position encoding system

Calcium fluoride phosphopeptide complexes

QUINOXALINEDIONE DERIVATIVES

Device and method implementing same for tightening a piece of fabric over a raised element

一种耐磨的立式煤磨机

一种新型调和罐

水下排缆器

一种多功能脖套

一种船用电磁扒炉