Self-teaching device,申请号US19530378749-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	Self-teaching device
摘要
申请公布号	US2790251(A)	申请公布日期	1957.04.30
申请号	US19530378749	申请日期	1953.09.08
申请人	WESLEY RHOTEN	发明人	RHOTEN WESLEY
分类号	G09B19/02	主分类号	G09B19/02
代理机构		代理人
主权项
地址

您可能感兴趣的专利

SURFACE INSPECTION METHOD AND SURFACE INSPECTION DEVICE

GAS LEAKAGE SPOT INSPECTING SYSTEM OF PIPE IN LOW-TEMPERATURE CONTAINER

MEASURING DEVICE AND MEASURING METHOD OF DOUBLE-LAYER FILM SHEET USING X-RAY INSPECTION METHOD

TORQUE DETECTION APPARATUS

EXECUTION METHOD OF ACTIVATED CONCRETE CUTTING WORK

EVALUATION METHOD AND EVALUATION DEVICE OF IMAGE

THIN TEMPERATURE SENSOR AND ITS MANUFACTURING METHOD

MEASUREMENT DEVICE FOR ROTATOR TORQUE

CONTINUOUS NONSTATIONARY FLOW RATE GENERATOR AND CONTINUOUS NONSTATIONARY FLOW RATE GENERATING METHOD FOR COMPRESSIBLE FLUID, AND FLOWMETER CALIBRATION DEVICE FOR COMPRESSIBLE FLUID

MEASURING METHOD AND MEASURING DEVICE FOR SURFACE ROUGHNESS OF MAGNETIC DISK SUBSTRATE AND MANUFACTURING METHOD FOR MAGNETIC DISK

OPERATION METHOD OF BOILING WATER REACTOR

HOT WATER STORAGE TANK

HEAT EXCHANGE ELEMENT

REFRIGERATION METHOD AND REFRIGERATION UNIT BY NONAZEOTROPIC REFRIGERANT MIXTURE

RADIATION IMAGE CONVERSION PANEL AND METHOD FOR MANUFACTURING IT

INNER HELICALLY-GROOVED HEAT TRANSFER PIPE FOR EVAPORATOR

STRUCTURE OF DOOR WITH WINDOW FOR STORAGE