METHOD FOR PREVENTING COUNTERFLOW OF EXCAVATED EARTH IN CENTER DRILLING METHOD OF PILE HOLE AND PILE HOLE DRILLING ROD,申请号JP19910256986-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	METHOD FOR PREVENTING COUNTERFLOW OF EXCAVATED EARTH IN CENTER DRILLING METHOD OF PILE HOLE AND PILE HOLE DRILLING ROD
摘要
申请公布号	JPH0598880(A)	申请公布日期	1993.04.20
申请号	JP19910256986	申请日期	1991.09.09
申请人	MITANI SEKISAN CO LTD	发明人	ODA HITOSHI
分类号	E21B7/00;E21B10/44	主分类号	E21B7/00
代理机构		代理人
主权项
地址

您可能感兴趣的专利

DEVICE FOR GENERATING SPEECH, APPARATUS CONNECTABLE TO OR INCORPORATING SUCH A DEVICE, AND COMPUTER PROGRAM PRODUCT THEREFOR

TAMPER-RESISTANT PACKAGING AND APPROACH

Tamper-resisting packaging

APPARATUS AND METHOD FOR MOTION COMPENSATION

METALLIC COATED DIELECTRIC SUBSTRATES

METHOD AND APPARATUS FOR TRANSMISSION POWER CONTROL

Amine modified adsorbent, its preparation and use for dry scrubbing of acid gases

METHOD AND APPARATUS FOR TESTING PULSATILE ENDURANCE OF A VASCULAR IMPLANT

AN OPTICAL COMMUNICATION SYSTEM FOR WIRELESS RADIO SIGNALS

STORAGE MEDIUM FOR THE OPTICAL STORAGE AND RETRIEVAL OF INFORMATION

OPTICAL TRANSMITTER/RECEIVER AND METHOD FOR SELECTING OPTICAL WAVELENGTH AUTOMATICALLY

METHODS AND DEVICES FOR THERAPEUTIC TREATMENT CARDIAC AND OTHER PATHOLOGIES

OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING SAME

CATHEPSIN CYSTEINE PROTEASE INHIBITORS AND THEIR USE

CYCLOHEXYL COMPOUNDS AS CCR5 ANTAGONISTS

CYCLOPROPYL COMPOUNDS AS CCR5 ANTAGONISTS

TRICYCLIC AMINOCYANOPYRIDINE INHIBITORS OF MITOGEN ACTIVATED PROTEIN KINASE-ACTIVATED PROTEIN KINASE-2

UROLOGICAL INSTRUMENT FOR ASSESSING URIN FLOW