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
Mechanical wave filter
摘要
申请公布号
US2332120(A)
申请公布日期
1943.10.19
申请号
US19420457964
申请日期
1942.09.11
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
SYKES ROGER A.
分类号
H03H9/50
主分类号
H03H9/50
代理机构
代理人
主权项
地址
您可能感兴趣的专利
IMAGE FORMING APPARATUS
HEAT SOURCE SYSTEM AND CONTROL METHOD OF HEAT SOURCE SYSTEM
AIR CONDITIONING SYSTEM AND ITS OPERATING METHOD
ELECTRONIC APPARATUS
HEAD STACK ASSEMBLY, MANUFACTURING METHOD THEREOF AND MULTI-DISC MAGNETIC STORAGE DEVICE
METHOD FOR PROCESSING SEMICONDUCTOR DEVICE
IMAGE CAPTURING APPARATUS, IMAGE CAPTURING METHOD, AND PROGRAM
INFORMATION SYSTEM FOR DETECTING AND PREVENTING UNAUTHORIZED USE OF SHARED INFORMATION
MOBILE COMMUNICATION TERMINAL, AND METHOD AND SYSTEM FOR ACQUISITION AND DISTRIBUTION OF CONTENT PROTECTED BY DIGITAL COPYRIGHT THEREOF
SUPERCONDUCTING COIL
AUTHENTICATION SYSTEM, INFORMATION EQUIPMENT, AUTHENTICATION METHOD, AND PROGRAM
PHOTO-SEAL CREATION APPARATUS, PHOTO-SEAL CREATION METHOD AND PROGRAM
METHOD OF MANUFACTURING OPTICAL WAVEGUIDE DEVICE
OPTICAL WAVEGUIDE AND METHOD OF MANUFACTURING THE SAME
CONCRETE CURING MEMBER, CONCRETE CURING APPARATUS AND CURING METHOD USING IT
MICROCAPSULE AND MICROCAPSULE-CONTAINING CURABLE RESIN COMPOSITION
MOTOR DRIVER CIRCUIT
LIGHTING METHOD OF DISCHARGE LAMP, LIGHTING CONTROL DEVICE,AND PROJECTOR
LIGHTING DEVICE OF HOT CATHODE FLUORESCENT LAMP
MOVABLE PANEL OF AIR-CONDITIONING INDOOR UNIT
