首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
Mining apparatus
摘要
申请公布号
US1761060(A)
申请公布日期
1930.06.03
申请号
US19210510459
申请日期
1921.10.26
申请人
THE JEFFREY MANUFACTURING COMPANY
发明人
SLYKE FREDERICK E. VAN
分类号
E21C29/02;E21D23/00
主分类号
E21C29/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
DETECTION SYSTEM FOR CENTER POSITION OF ELLIPTIC PICTURE
COMPOSITE ELECTROMOTIVE DEVICE UTILIZING SOLAR ENERGY, ETC.
MANUFACTURE OF PHOTOELECTRIC CONVERSION DEVICE
TREATMENT OF FERROMAGNETIC METALLIC POWDER
EDGE DETECTING CIRCUIT
RESISTING RIBBON
AUTOMATIC CASH TELLER MACHINE
MESSAGE STORAGE REPRODUCING DEVICE
FIELD CONTROLLER FOR INDUCTION MOTOR
VOLTAGE EQUILIBRATING DEVICE FOR ENGINE GENERATOR
METHOD FOR PREVENTING CORROSION
TESTING SYSTEM OF INFORMATION PROCESSING SYSTEM
FREQUENCY CONTROLLER
FREQUENCY CONTROLLER
DEPOSITING METHOD OF PLATINUM CATALYST BODY HAVING PROMOTOR
FLASH DEVICE
MANUFACTURE OF PLASTIC SHEET
REPETITIVE SEQUENCE DATA TRANSMITTER
CONTROLLING METHOD OF ELECTRIC MOTOR CAR
METHOD AND DEVICE FOR TAPING SEMICONDUCTOR DEVICE
