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
METHOD OF LAYER-WISE WORKING OF THICK STEEP COAL STRATA BY POLES ON SLOPE
摘要
申请公布号
SU1564347(A1)
申请公布日期
1990.05.15
申请号
SU19884482944
申请日期
1988.07.15
申请人
VNI PK UGOLNYJ I "KUZNIUI"
发明人
TOMASHEVSKIJ LYUDVIG P,SU
分类号
E21C41/18
主分类号
E21C41/18
代理机构
代理人
主权项
地址
您可能感兴趣的专利
CORROSION PREVENTING METHOD FOR CONDENSER
MAGNETIC RECORDING MEDIUM
SOLAR HEAT HOT WATER DEVICE
PICTURE FORMING DEVICE
BATTERY
RADIATION MEASURING APPARATUS
ON-LOAD TAP CHANGER
PHOTOCONDUCTIVE MEMBER
TEMPERATURE DETECTION TUBE
WAVELENGTH PLATE MEASURING INSTRUMENT
SOLAR HEAT UNDERGROUND HEAT STORAGE ROOM HEATER/COOLER
SOLAR HEAT STORAGE TANK
MANUFACTURE OF SEMICONDUCTOR DEVICE
CLASSIFYING DEVICE OF DISKETTE INSPECTION
INPUT SWITCHING CIRCUIT
MAGNETIC RECORDING SYSTEM
RAIL FOR SHELF DEVICE AND FLOOR RUNNING SYSTEM CONVEYING TRUCK
HOT WATER STORAGE TANK FOR HOT WATER DEVICE UTILIZING SOLAR HEAT
SOLAR HEAT COLLECTOR
MAGNETIC CARD READER