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
Automatic printing telegraph exchange system
摘要
申请公布号
US2002985(A)
申请公布日期
1935.05.28
申请号
US19320646368
申请日期
1932.12.09
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
LOCKE GEORGE A.
分类号
H04L12/18
主分类号
H04L12/18
代理机构
代理人
主权项
地址
您可能感兴趣的专利
HEAT PUMP TYPE AIR-CONDITIONING EQUIPMENT
CONTROLLER FOR AIR CONDITIONERS
HEATING APPLIANCE
PULSE BURNER
CONTROL OF COKE-RECEIVING TRAVERSE OF COKE QUENCHING VEHICLE
LIGHT-EMITTING MATERIAL
POLYETHYLENE POLYMER COMPOSITION FOR STRETCHABLE FILM
NITROGEN-CONTAINING CONDENSED PRODUCT BASED ON NON-MODIFIED OR MODIFIED NATURAL RESIN AND ITS PRODUCTION AND USE
PRODUCTION OF MODIFIED MATERIAL OF ULTRA-HIGH-MOLECULAR-WEIGHT POLYOLEFIN
PRODUCTION OF PHOSPHIDE
HETEROCYCLIC COMPOUND
HALOGENOALKYLFURFURYL ALCOHOLS AND PRODUCTION THEREOF
FLUORINE-CONTAINING PYRAZOLE DERIVATIVE AND ITS PREPARATION
LIQUID CRYSTAL COMPOUND CONTAINING BETA-HYDROXYCARBOXYLIC ACID ESTER AS ASYMMETRY SOURCE AND LIQUID CRYSTAL COMPOSITION CONTAINING SAME
OPTICALLY ACTIVE ESTER COMPOUND
POLYETHYLENE POLYMER COMPOSITION FOR STRETCHABLE FILM
1,4-BENZOXAZINE DERIVATIVE
QUINOLINE-3-CARBOXYLIC ACID DERIVATIVE
NOVEL LIQUID CRYSTAL COMPOUND
PRODUCTION OF CHLOROPROPENES
