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
TELEPHONE CALLING DEVICE
摘要
申请公布号
CA424750(A)
申请公布日期
1944.12.26
申请号
CAD424750
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED;AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
FRANK A. COSGROVE
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
Probenplatte mit Verteileraufsatz
Photovoltaik-Anordnung
HYDRAULIC RESCUE TOOL
X-RAY DETECTOR AND X-RAY CAMERA
CROSSLINKED OLEFIN POLYMER AND METHOD OF PRODUCING THE SAME
METHODS OF USE FOR CYCLOPAMINE ANALOGS
METHOD AND SYSTEM FOR PROVIDING DYNAMIC INSURANCE
BATTERY TERMINAL PROTECTION CAP OF AUTOMOBILE
APPARATUS FOR MANUFACTURING LIQUID NITROGEN AND LIQUID OXYGEN
COATING METHOD OF PRODUCT SURFACE
DYEING APPARATUS OF THERMOPLASTIC POLY-URETHANE MOLDING PRODUCT
WASHING BALL WITH A COUPLE OF MAGNETS
SLIDING DOOR FOR OPENING-PART OPENING AND SHUTTING
AUTO LOCKING CRESCENT FOR SEALING OF WINDOW
STATIONARY PUNCH FOR EXACTLY FORMING A HOLE, CAPABLE OF CONFIRMING A HOLE TO BE FORMED ON A PAPER
A DEVICE AND SYSTEM FOR WELL COMPLETION AND CONTROL AND METHOD FOR COMPLETING AND CONTROLLING A WELL
VERFAHREN UND VORRICHTUNG ZUR CACHE-PROMOTION
1, 2 - ADDITION OF CARBONYL COMPOUNDS USING THE ENZYME YERE
METHODS AND APPARATUS FOR AIR BRAKE RETENTION AND DEPLOYMENT
ANGLE DETECTING DEVICE AND METHOD FOR MANUFACTURING THE SAME
