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
Disk bit
摘要
申请公布号
US1905165(A)
申请公布日期
1933.04.25
申请号
US19300436335
申请日期
1930.03.17
申请人
HUGHES TOOL COMPANY
发明人
FLETCHER HAROLD W.
分类号
E21B4/02;E21B10/08;E21B10/12
主分类号
E21B4/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
VEGETABLE CUTTER
ROBOT WITH VIBRATION ABSORBING MECHANISM
STAPLE CLOGGING DETECTING MECHANISM IN STAPLER
OIL FILTER WRENCH
GRIND HOLDER FOR EDGED TOOL
GRINDING WHEEL FOR POLISHING FUNNEL GLASS OF CATHODE-RAY TUBE
DRESSING DEVICE
GRINDING WHEEL BODY ELEVATING DEVICE FOR STONE GRINDING AND POLISHING MACHINE, AND ITS METHOD
WORK CARRYING DEVICE
ARTICLE CARRYING DEVICE
PART WORKING METHOD AND PART WORKING LINE
CUTTING MACHINE FOR CONTINUOUS CASTING
DUST COLLECTOR FOR DRILLING TOOL
FEED SCREW MECHANISM
HOLLOW CONTAINER CHARGING DEVICE FOR HOLLOW CONTAINER PRESS DEVICE
PARTS TRANSFER EQUIPMENT
METHOD FOR CONTINUOUSLY CASTING STEEL
METHOD FOR VENTING TAIL END PART OF ROLLED COIL AND DEVICE THEREFOR
CONTAINER HOLDING DEVICE
ABRASION METHOD OF TAPERED SURFACE FOR ATTACING RETAINER OF MAIN SPINDLE OF MILLING MACHINE NUMERICALLY CONTROLLED
