Oil well drilling apparatus,申请号US19500181408-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	Oil well drilling apparatus
摘要
申请公布号	US2730330(A)	申请公布日期	1956.01.10
申请号	US19500181408	申请日期	1950.08.25
申请人	JOY MANUFACTURING COMPANY	发明人	BALL CHARLES F.
分类号	E21B7/02;E21B19/08	主分类号	E21B7/02
代理机构		代理人
主权项
地址

您可能感兴趣的专利

SHEET TREATING DEVICE

ARC FURNACE FACILITY

GASIFICATION TOOL OF BLACK LIQUOR

SINKER DEVICE OF KNITTING MACHINE AND METHOD FOR FORMING KNIT FABRIC

MANUFACTURE OF PRINTED-WIRING BOARD

ENCLOSURE STRUCTURE

CYCLIC AMIDE DERIVATIVE

MOBILE COMMUNICATION EQUIPMENT

CONNECTING METHOD FOR PIPE FOR PIPE WORK, SUCH AS ELECTRICITY, CITY WATER, AND WELL

PACKAGE FOR SEMICONDUCTOR IC CHIP, PRODUCTION THEREOF AND LEAD FRAME

METHOD AND CIRCUIT FOR SUPPRESSION OF DATA LOADING NOISE IN NONVOLATILE MEMORY

IMAGE SIGNAL CODING METHOD AND IMAGE SIGNAL CODER

AUTOMATIC TICKET EXAMINATION MACHINE

COMPONENT MADE OF QUARTZ GLASS WITH COATING FILM

PARALLEL HOT LIQUID SUPPLY DEVICE FOR HEATING TYPE HOT LIQUID STORAGE TANKS

PYROELECTRIC INFRARED DETECTOR AND MANUFACTURE THEREOF

TIME PIECE WITH HAND POSITION DETECTION FUNCTION