,申请号FR19690044396-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
摘要
申请公布号	FR2071226(A5)	申请公布日期	1971.09.17
申请号	FR19690044396	申请日期	1969.12.22
申请人	ROCK FALL CY LTD	发明人
分类号	E21B7/20;(IPC1-7):E21B3/00;E02D17/00	主分类号	E21B7/20
代理机构		代理人
主权项
地址

您可能感兴趣的专利

MOUNTING STRUCTURE OF ELECTRONIC PARTS AND MOUNTING METHOD

METHOD AND MEANS FOR STRENGTHENING OPTICAL CHARACTER RECOGNITION ABILITY FOR PRINTED DOCUMENT

METHOD AND DEVICE FOR MEASURING AND CONTROLLING ANGLE OF REFRACTION OF ULTRASONIC WAVE

GRAPHIC ENLARGING/EDITING METHOD

NATURAL LANGUAGE ANALYZING DEVICE

ACCELERATION SENSOR

CHARACTER PROCESSING METHOD

DOCUMENT CREATING DEVICE

DOCUMENT PREPARING METHOD

DOCUMENT PROCESSOR

FUEL CELL VEHICLE AND STARTING METHOD THEREFOR

PLATE-SHAPED MULTIPLE-JUNCTION TYPE ELECTROCHEMICAL CELL

LITHIUM SECONDARY BATTERY

WORK LINE BALANCE DISCRIMINATING DEVICE

PHOTODETECTING SYSTEM

EYEGLASS STEREOSCOPIC IMAGE DISPLAY DEVICE

DIELECTRIC CERAMIC FOR MICROWAVE