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 or relating to electric directional relay elements
摘要
申请公布号
GB387666(A)
申请公布日期
1933.02.09
申请号
GB19320015272
申请日期
1931.05.01
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
分类号
H02H7/30
主分类号
H02H7/30
代理机构
代理人
主权项
地址
您可能感兴趣的专利
GAS LIQUID CONTACT REACTOR
POTTING MATERIAL AND HOLLOW FIBER MEMBRANE MODULE
CONCENTRATION DETECTING DEVICE FOR SUSPENSION
OPERATION CONTROL METHOD FOR FULLY AUTOMATIC WASHING MACHINE
ILLUMINATOR FOR GAME MACHINE
POINTILLAGE INSTRUMENT
URINE SAMPLING BAG FOR MEN
NUCLEAR MAGNETIC RESONANCE INSPECTING SYSTEM
HEATER FOR TOILET SEAT
SEWING MACHINE FRAME
INNER RAIL DEVICE FOR PACHINKO MACHINE
BATHING UNIT
ELECTRIC VACUUM CLEANER
SUPPORT DEVICE FOR FALL PREVENTION TOOL, FALL PREVENTION DEVICE, AND SHELF
SELECTIVE CONCENTRATION OF MICROORGANISM AND MICROORGANISM EXAMINATION USING THE CONCENTRATION
PREPARATION OF RETICULATE CAKE OR BREAD DOUGH AND APPARATUS THEREFOR
SPRING-FITTING APPARATUS FOR SPREADING SHEET
APPARATUS FOR SOIL COVERING OF TRANSPLANTER
SYNTHETIC RESIN FLOWERPOT AND ITS USE
SNAP BUTTON