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
APPARATUS FOR WATER BLOCKING A MECHANICAL COAL MINER
摘要
申请公布号
PL143291(B1)
申请公布日期
1988.02.29
申请号
PL19840247816
申请日期
1984.05.23
申请人
发明人
分类号
E21C;E21C35/22;(IPC1-7):E21C35/22
主分类号
E21C
代理机构
代理人
主权项
地址
您可能感兴趣的专利
(B) ;LEHNSESSEL
(B) ;DIARAHMEN
(B) ;LANGLAUFSKI
OPTICAL INFORMATION RECORDING MEDIUM
BUBBLE MODE INFORMATION RECORDING MEDIUM AND ITS PRODUCTION
PACKER
PACKER
ELEVATOR WITH STOPPAGE STAIR RESET CIRCUIT
ENCLOSED TYPE LEAD STORAGE BATTERY
MANUFACTURE OF COOLING PLATE FOR FUEL CELL
PREPARATION OF FILTER FOR GAS DETECTION ELEMENT
PRODUCTION OF HIGH-PURITY SALT
PAPERLIKE ARTICLE SEPARATING AND CARRYING DEVICE
METHOD FOR PROTECTING UNDERWATER STRUCTURE
AIR-FUEL RATIO CONTROLLER FOR ENGINE
POLYESTER MOLDING HAVING IMPROVED LIGHT RESISTANCE AND PRODUCTION THEREOF
OPERATION CIRCUIT
SIDE CUTTER USED IN SEWING MACHINE
DISTILLATION OF DRY CLEANER
SUCTION PORT BODY OF ELECTRIC CLEANER