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 sound translating devices
摘要
申请公布号
GB641718(A)
申请公布日期
1950.08.16
申请号
GB19460037950
申请日期
1946.12.28
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED;JOHN PRESTON
发明人
分类号
H04R1/28
主分类号
H04R1/28
代理机构
代理人
主权项
地址
您可能感兴趣的专利
WHITENING OF LIGNIN-CONTAINING PULP DURING PRODUCTION
TUFTING MACHINE
POLYURETHANE ELASTIC FIBER HAVING MODIFIED CROSS SECTION AND PANTYHOSE USING THE SAME
PLATING METHOD FOR POLYCARBONATE OR (AND) ABS RESIN MOLDED GOODS
REACTIVE HOT-MELT ADHESIVE
FIXING SHEET AND FIXING METHOD FOR CORSAGE
METAL SURFACE TREATMENT COMPOSITION AND SURFACE-TREATED METAL PLATE
RESIN COMPOSITION FOR POWDER COATING MATERIAL
THERMOSETTING POWDER COATING COMPOSITION
SYNERGISTIC FLAME RETARDANT COMBINATION FOR POLYMER
BIOACTIVE SUBSTANCE, ITS PRODUCTION AND AGENT
MOISTURE PERMEABLE FILM
PLASTIC MOLDING PRODUCT
ENERGY-SAVING-TYPE ROPE ELEVATOR
PAPER SHEET HANDLING DEVICE
CONTROLLING METHOD FOR WASTE SUCTION
DEFLECTOR DEVICE IN JET PROPELLED BOAT
STERILIZING AND FILLING METHOD FOR CONTAINER
BRAKE CONTROL SYSTEM HAVING A HILL STARTING AID DEVICE
PACKAGING BODY FOR CLOTHING ARTICLES TO BE PUT ON ONE OVER ANOTHER