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
Safety casing head
摘要
申请公布号
US1929826(A)
申请公布日期
1933.10.10
申请号
US19290336060
申请日期
1929.01.30
申请人
REYNOLDS CHARLES B
发明人
REYNOLDS CHARLES B.
分类号
E21B33/06
主分类号
E21B33/06
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Enciphering and deciphering device for high bit-rate transmission systems.
Thickening system.
CONTAINER WITH SELF-COOLING FUNCTION
UNIVERSAL CRANK COMPASS DEVICE CAPABLE OF DRAWING ELLIPSE
PHOTOMETRIC APPARATUS OF CAMERA
PHOTOMETRIC APPARATUS OF CAMERA
FOLDED PACKAGE
EXAMINATION METHOD USING NUCLEAR MAGNETIC RESONANCE
MANUFACTURE OF WATCH BAND
SPECIAL FINE POWDER
ANTISTATIC RESIN COMPOSITION
COATING COMPOSITION AND INSULATED WIRE
GAS-IMPERMEABLE RESIN COMPOSITION
ACTINIC RADIATION-CURABLE COMPOSITION
HYDRAULIC JACK
STEP FOR PASSENGER CONVEYOR AS WELL AS MANUFACTURE THEREOF AND WAVY METAL PLATE
LONG MATERIAL STORAGE DEVICE
PLATE MATERIAL IN-OUT CARRYING DEVICE
SPECIAL ACCESS METHOD
Dowel drill.