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
Improvements in or relating to the production of welded tubes
摘要
申请公布号
GB747557(A)
申请公布日期
1956.04.11
申请号
GB19530003279
申请日期
1953.02.05
申请人
RHEINISCHE ROEHRENWERKE AKTIENGESELLSCHAFT
发明人
分类号
B21C37/08
主分类号
B21C37/08
代理机构
代理人
主权项
地址
您可能感兴趣的专利
HCV-antigen/antistoff-kombinasjonsanalyse
Fremgangsmåte for opprettholding av formasjonsstabilitet i sanntid
Simulering av et LAN-kort ved hjelp av trådlöst modem
PRINTED CIRCUIT BOARD
FREQUENCY VARIABLE RESONANCE CIRCUIT, FREQUENCY VARIABLE FILTER, ANTENNA MULTICOUPLER AND COMMUNICATION DEVICE
OUTER TUBE AND FLEXIBLE SHAFT
FLAT CRT HAVING IMPROVED SHADOW MASK
CIVIL ENGINEERING WORK SYSTEM AND METHOD, AND AUTO-CAD METHOD FOR USE IN THE SAME
METHOD FOR MANUFACTURING THIN FILM TRANSISTOR ARRAY
SENSE AMP CIRCUIT OF SEMICONDUCTOR MEMORY DEVICE
PLASTIC RECEIPT BOX
CALL PROCESSING METHOD FOR MCCA IN IS-2000 BASE STATION
WIRELESS COMMUNICATION DEVICE
METHOD FOR REMOVING IMPURITIES FROM SURFACE OF WHITE COPPER PIPE
DEVICE AND METHOD FOR GENERATING STM FRAME IN SDH APPARATUS
DISCHARGE VALVE ASSEMBLY
METHOD FOR MENDING PATTERN ERROR OF SEMICONDUCTOR LAYER IN TFT LCD PANEL
PLATE-LIKE BODY CARRYING BOX
METHOD AND SYSTEM FOR TRANSFERRING CASSETTE
COLOR CATHODE RAY TUBE
