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 HEAD OF A LONGWALL TYPE MECHANICAL COAL MINER
摘要
申请公布号
PL147112(B1)
申请公布日期
1989.04.29
申请号
PL19850253160
申请日期
1985.04.29
申请人
发明人
分类号
E21C;E21C25/10;(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
Simplified method of detection by spheres when there is a low signal to noise ratio
Small conductance, calcium-activated potassium channels (SK 3)
Human CD28 specific monoclonal antibodies for antigen-non-specific activation of T-lymphocytes
Substituted pyrrolines as kinase inhibitors
Dwf4 polynucleotides, polypeptides and uses thereof
Production method of image-forming apparatus, and image-forming apparatus produced by the production method
Tryptase inhibitor proteins derived from blood-feeding anthropod ectoparasites
Network support for fax retry blocking
Imaging forming apparatus capable of repeatedly reading out and printing stored image data
Telescopic lotion applicator
Methods for regulating gas turbine engine fluid flow
Hybrid mobile switching center for combined GSM/IS-41 communication
Poker game played against multiple dealer hands
Electronic television program guide delivery system using telephone network idle time
Control device of internal combustion engine
Sanitary panty
Digital broadcasting reception system, digital broadcasting receiver, display, printer and printing method
Apparatus having guide means for guiding a record carrier to be scanned
Temperature compensation for silicon MEMS resonator
Semiconductor device having a connection inspecting circuit for inspecting connections of power source terminals and grounding terminals, and inspection method for the same