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
Frequency modulation
摘要
申请公布号
US2212338(A)
申请公布日期
1940.08.20
申请号
US19380204745
申请日期
1938.04.28
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BOWN RALPH
分类号
H03D3/00;H04B14/00
主分类号
H03D3/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
ADHESIVE ACRYLIC COPOLYMERS WITH A BROAD MOLECULAR WEIGHT DISTRIBUTION
ROOF VENT OF SYNTHETIC FIBER MATTING
PROCESS AND DEVICE FOR RELINING SERVICE DRAINS JOINED TO INACCESSIBLE MAIN SEWAGE DRAINS
MONOCLONAL ANTIBODY SPECIFIC FOR AN ANTIGEN ON DENDRITIC CELLS
PROCESS FOR MAKING GRANULAR AUTOMATIC DISHWASHING DETERGENT
MACROMONOMERS HAVING REACTIVE SIDE GROUPS
METHOD AND APPARATUS FOR CONTROLLING A FUME HOOD
AN ARRANGEMENT IN SUPPORTING A FAN HOUSING BY MEANS OF AN ELASTIC RING
LIQUID REMOVAL APPARATUS AND METHOD FOR WOOD PULP
PROCESS AND DEVICE FOR FORMING THREE-DIMENSIONAL COVERS
ONE-WAY VALVE FOR FLUIDS
BLOW MOLDABLE THERMOPLASTIC POLYAMIDE COMPOSITION
AMALGAM-GLASS IONOMER BONDING SYSTEM
INSECTICIDAL COMPOSITION
DOSAGE FORM FOR DELIVERING DRUG IN SHORT-TIME PERIOD
METHOD FOR TREATMENT OF METABOLIC DISORDERS
HANDLING SYSTEM CONFIGURED FOR USE WITH A RECEPTACLE
TRAGFLUEGELBOOT MIT VERSTELLBAREN FLUEGELN.
SABER SAW TRACING LIGHT
TOOL WITH WEAR-RESISTANT CUTTING EDGE MADE OF CUBIC BORON NITRIDE OR POLYCRYSTALLINE CUBIC BORON NITRIDE, A METHOD OF MANUFACTURING THE TOOL AND ITS USE
