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
COAL MINING APPARATUS
摘要
申请公布号
PL129160(B1)
申请公布日期
1984.04.30
申请号
PL19800227343
申请日期
1980.10.15
申请人
发明人
分类号
E21C;E21C25/10;E21D;(IPC1-7):E21C25/10
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
Apparatus and method for linking an elongated extruded meat product
Plastics box with corner uprights
Shipping and display crate
Anti-fouling covering for use in sub-sea structures
Pressure regulator
Burner unit
Preparation of fluoroanilines by electrochemical means
Air handling apparatus and method for textile machines
Protective assembly for hypodermic syringes
Heat radiating element and drippings shield for gas-fired barbecues
Mimeographic printing machine
Mass airflow sensor
Hydraulic striking device
Smoke seal
Crop row deviation sensing device
Easy tie fish hook or the like
Fuel tank level indicator
Apparatus for producing prepared foods by electrical conduction
Combined ear and eye protection device
Three-dimensional memory card structure with internal direct chip attachment
