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
Cushioned lead pencil
摘要
申请公布号
US2231410(A)
申请公布日期
1941.02.11
申请号
US19390289756
申请日期
1939.08.12
申请人
KERN EMIL A;KERN BRUNO M
发明人
KERN EMIL A.;KERN BRUNO M.
分类号
B43K19/02
主分类号
B43K19/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD FOR CONTROLLING CASTING OF INGOT
PRODUCTION OF LOWER PIPE FOR STEPPED POLE
MANUFACTURE OF VOLTAGE NON-LINEAR RESISTANCE BODY
FORMATION OF PROTECTIVE FILM
TAPE GUIDE
METHOD FOR MACHINING FLOATING HEAD SLIDER
ROTARY AUTOMATIC REVERSE HEAD
DOCUMENT EDITION PROCESSOR
DOT MATRIX SYSTEM DISPLAY UNIT
POLISHING METHOD FOR PHOTOSENSITIVE BODY
LIQUID TANK FOR ULTRASONIC INSPECTION
ULTRASONIC TEST EQUIPMENT
AUTOMATIC INSPECTION INSTRUMENT FOR COMMODITY
DECONTAMINATING DEVICE OF TURBINE NOZZLE DIAPHRAGM FOR NUCLEAR REACTOR
REFRIGERATOR
AIR SPED CONTROL PANEL FOR AIR COOLING
PIPE JOINT FOR OIL WELL PIPE
PIPING JOINT WITH FLANGING AND LOCKING
WASHER MADE OF CERAMIC AND MANUFACTURE THEREOF
SCREW AND MANUFACTURE SCREW