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
Improvements in electrical percussion drilling apparatus
摘要
申请公布号
GB902545(A)
申请公布日期
1962.08.01
申请号
GB19600014672
申请日期
1960.04.27
申请人
JOHANN HOCHREUTER
发明人
分类号
B25D16/00;E21B1/18;E21B21/01;E21B21/16
主分类号
B25D16/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD FOR SWITCHING STANDBY PROCESSOR OF EXCHANGE
RADIATION SOURCE ASSEMBLY
APPARATUS FOR REDUCING HOWLING OF FLAT CATHODE-RAY TUBE
DEVICE FOR DETECTING ALARM INDICATION SIGNAL OF DS1E AND DS1
UPC PROCESSING METHOD IN ATM NETWORK
LAN DATA TRANSMISSION APPARATUS
DATA OUTPUT BUFFER
DYNAMIC BEARING OF SPINDLE MOTOR HAVING CURVED GROOVE
SEMICONDUCTOR DEVICE
AIR PURIFIER IN BARN
METHOD FOR MAKING PURE SILICON WAFER
CHARGE COUPLED DEVICE AND MANUFACTURING METHOD THEREOF
SIMULATION METHOD OF CONTAINER TERMINAL DESIGN
SCREW AIR COMPRESSOR OF WATER JETTING AND NON-OILING TYPE
DEVICE FOR PROCESSING ANALOG AUDIO SIGNAL OF DIGITAL CONTROL METHOD FOR MINIMIZING SIGNAL DISTORTION
METHOD FOR HARDENING SURFACE OF ROLL USING CARBIDE
COMPUTER-TELEPHONE CALL SERVER SYSTEM AND SERVICE METHOD THEREOF
ELECTRO LUMINESCENCE DISPLAY DEVICE
ABBREVIATED DIALING METHOD USING SYMBOL RECOGNITION IN COMMUNICATION TERMINAL
METHOD FOR DISPLAYING USER INTERFACE MESSAGE OF PRINTER DRIVER SUPPORTING MANY LANGUAGES
