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
VORRICHTUNG ZUR AUSLOESUNG EINES AKUSTISCHEN RUFES AN TEILNEHMERSTELLEN VON FERNSPRECHANLAGEN.
摘要
申请公布号
DE1757647(U)
申请公布日期
1957.12.12
申请号
DE195600T7434U
申请日期
1956.09.07
申请人
TELEFONBAU UND NORMALZEIT G.M.B.H.
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
您可能感兴趣的专利
NONNLINEAR COMPENSATOR FOR RF AMPLIFIER
METHOD OF MAKING SOFT POLYURETHANE FOAM
GLASS PRODUCT FORMATION AND APPARATUS
BURNER
DECOLORIZING PROCESS FOR ORGANIC SLUDGE AND CLEARINGGOFF PROCESS FOR ORGANIC MATTER
16-METHYL-9 -HALO STEROID ESTERS AND ETHERS AND PREPARATION THEREOF
IMPROVEMENTS IN OR RELATING TO STRUCTURAL ASSEMBLIES WITH INFILL PANES OR PANELS IN A FRAME STRUCTURE
CELLULOSE GRAFT COPOLYMER
METHOD OF FABRICATING DETECTED CARD
MANHOLE INSTALLING STRUCTURE FOR SEWER PIPE PASSAGE
CLOSING HOLDING DEVICE FOR FOLDING DOOR
LATERAL MOVING COMINGGINNANDDOUT AUTOMATIC CAR SHED
BAG FILTERRTYPE DUST COLLECTOR APPATATUS
THIENYL AND THIETYL COMPOUNDS
A PROCESS FOR THE PRODUCTION OF AMMONIUM SALTS OF DITHIOCARBAMIC ACIDS
INNFESTINGSANORDNING FOR PLASTHAANDTAK I SAKS ELLER LIKNENDE
FREMGANGSMAATE OG ANORDNING FOR PLASMA SVEISING
Polycarbonate article coated with an adherent, durable, silica filled organopolysiloxane coating and process for producing same
TEMPERATURE-REGULATING ARRANGEMENT FOR A COOLING SYSTEM
CAPACITANCE TO DIGITAL CONVERSION SYSTEM