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
Telephone instrument circuit
摘要
申请公布号
US2350604(A)
申请公布日期
1944.06.06
申请号
US19420457119
申请日期
1942.09.03
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
FRYDMAN EMANUEL
分类号
H04Q5/02
主分类号
H04Q5/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
UNLOADING DEVICE
IMPRESSION MATERIAL FOR BITE TAKING
OVERHEAD TRAVELLING CRANE HAVING COUNTER WEIGHT FOLLOWING TO MOVE
METHOD FOR FABRICATING HOUSEHOLD SOLID
MEANDERING PREVENTING METHOD BY AUTOMATIC PILOT
LINK MECHANISM FOR AIR CONDITIONER FOR AUTOMOBILE
SUSPENSION DEVICE FOR VEHICLE
DUPLEX PRINTER
PRINTING METHOD AND PRINTER
MANUFACTURE OF AIR-PERMEABLE PACKAGING BAG
STONE MACHINING DEVICE
DUST COLLECTING DEVICE FOR ROBOT
PRESSURE TYPE ABRADING MATERIAL INJECTION MACHINE
METHOD OF TREATING SURFACE OF CAST-IN TILE IN PC SLAB
METHOD AND DEVICE FOR AUTOMATICALLY POURING MOLTEN METAL
WORKING METHOD FOR PUNCHING BY PRESS, AND PRESS DIE
CASING STRUCTURAL MEMBER AND BENDING DIE THEREFOR
METHOD FOR GRINDING ROLL
ELECTRICALLY IONIZED WATER FORMING DEVICE
TREATMENT OF WASTE WATER
