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
Electroacoustic energy converting system
摘要
申请公布号
US2069242(A)
申请公布日期
1937.02.02
申请号
US19330652510
申请日期
1933.01.19
申请人
GRAHAM GEORGE A
发明人
GRAHAM GEORGE A.
分类号
H04R1/28;H04R7/20
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
APPARAT FOR SILING AV MASSE
GAMES BATS AND RACKETS.
VARIABLE PAGE SIZE PER ENTRY TRANSLATION LOOK-ASIDE BUFFER
CANNULAE AND ASSEMBLIES INCLUDING A CANNULA
CABLE REINFORCEMENT FOR AN OPTICAL FIBER CABLE
BIMODAL EMULSION AND ITS METHOD OF PREPARATION
LOAD CONTROL CIRCUIT FOR PREVENTING OVERLOAD OF A POWER SUPPLY
NAIL WITH DIFFERENTIAL HOLDING CAPABILITIES ALONG ITS SHANK
RECORDING APPARATUS.
N-PYRAZOLYL-1,2,4-TRIAZOLO[1,5-C]PYRIMIDINE-2-SULFONAMIDE HERBICIDES
IMIDAZO[2,1-B]BENZOTHIAZOLE-3-ACETAMIDE DERIVATIVES, THEIR PREPARATION AND THEIR USE IN THERAPEUTICS
DIFFERENTIAL GEAR ASSEMBLY
REFRIGERATION COMPRESSOR WITH DISCHARGE MUFFLER
SECURITY INSTALLATION AND OPERATING METHOD
SOLID ADHESIVE COMPOSITION
A METHOD OF PRODUCING A SEMICONDUCTOR DEVICE
SWITCH MODE REGULATED POWER SUPPLY
CONTINUOUS PROCESS FOR PREPARING ISOBUTYRIC ACID BY KOCH'S SYNTHESIS
FLAME RETARDANT POLYAMIDES
Paperikoneen kaksiviirainen rainanmuodostusosa
