Detachable drill bit,申请号US19360064788-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	Detachable drill bit
摘要
申请公布号	US2158120(A)	申请公布日期	1939.05.16
申请号	US19360064788	申请日期	1936.02.19
申请人	HIRSCHBERG CHARLES A	发明人	HIRSCHBERG CHARLES A.
分类号	E21B17/04	主分类号	E21B17/04
代理机构		代理人
主权项
地址

您可能感兴趣的专利

RYUSHIHENSEINOEREKUTORETSUTOSENIUEBU

BRANCHED ALKYLAMINO DERIVATIVE OF THIAZOLE, ITS PRODUCTION, AND MEDICINE COMPOSITION

TOKASEIOJUSURUHORIOREFUINTAKOMAKUNOSEIZOHOHO

SHARYONO4RINSODASOCHI

KARAAGAZOKEISEIHOHO

KOKUYOSOSEIBUTSU

BIPHENYLMETHYL-SUBSTITUTED PYRIDONE

SENINYOTSUTEHOKYOSARETASEIKEIHINOSEIZOSURUTAMENOSOCHI

IGARUIOYOBIKOCHURUINOBOCHUZAI

摩托车油箱护套

食品包装袋

日化用品盒(3)

NOHENOYAKUBUTSUTOYONOKOJO

TOKOZUREBOSHIMATSUTORESU

ALKENYLAMINOALKYLENE PHOSPHONIC ACID ESTERS AND PROCESS FOR THE PREPARATION OF COPOLYMERS COMPRISING ALKENYLAMINOALKYLENE PHOSPHONATES AND ETHYLENIC UNSATURATED COMPOUNDS

Method for selectively etching GaAs over AlGaAs.

INK-JET PRINTER.

Protective structure for an optical fiber coupler and method for protecting the same.