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
Pencil
摘要
申请公布号
US1815309(A)
申请公布日期
1931.07.21
申请号
US19290342394
申请日期
1929.02.25
申请人
DUR-O-LITE PENCIL COMPANY
发明人
LYNN JOHN P.
分类号
B43K29/00
主分类号
B43K29/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Process for preparing sheet forming particles and sheets therefrom
Method of filming glass surfaces
Attitude reference device
Improvements in or relating to optical lenses
Organic salts of polymers containing carboxyl groups
Improvements in or relating to the production of sintered compacts of beryllia
Improvements relating to automatic gramophones
Improvements in multi-turn potentiometers
Still picture projector
ΚΛΕΙΘΡΟΝ ΠΑΝΤΟΣ ΤΥΠΟΥ ΘΥΡΩΝ ΚΑΙ ΚΙΒΩΤΙΩΝ.
Improvements in or relating to the treatment of waste liquor or effluent
Power steering mechanism
Improvements in or relating to drilling or like jigs
Improvements in or relating to semi-conductor assemblies
Method and equipment for locating leakage points in a heat exchanger
Improvements in or relating to polymerisation catalysts and the production of polyethylene therewith
A process for the polymerisation of ethylene
Production of aluminum triaralkyl compounds and alkyl aromatics therefrom
An improved spinner for use in distributing granular materials
Improvements in or relating to transfer coating compositions
