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
Rock bit
摘要
申请公布号
US2170320(A)
申请公布日期
1939.08.22
申请号
US19370119615
申请日期
1937.01.08
申请人
GLOBE OIL TOOLS COMPANY
发明人
CATLAND ALFRED C.
分类号
E21B10/10
主分类号
E21B10/10
代理机构
代理人
主权项
地址
您可能感兴趣的专利
FLOOR ENAMEL
POLYMERIC PRESS-COMPOSITION
NITROCELLULOSE-BASED COMPOSITION
SELF-PROPELLED HOIST
SAFETY TWIN TACKLE
METHOD OF METAL HEATING IN HEATING FURNACES IN INERT GAS
BLAST FURNACE COOLING DEVICE
METHOD OF PRODUCING OLIGOESTERACRYLATES
DEVICE FOR LIFTING AND MOVING THE ROOF BLOCKS OF INDUSTRIAL BUILDINGS AND STRUCTURES
UNDER-CRANE TRUSS
DEVICE FOR ENGAGING A LAYER OF BRICKS
DEVICE FOR ENGAGING FLANGED ARTICLES
LOAD-LIFTING HANGER
ROPE-LUBRICATING APPARATUS
UNIT FOR UNLOADING AND CLEANING OPEN RAILWAY CARS
METHOD OF CONTROLLING THE PROCESS OF LOADING LOOSE MATERIAL INTO RAILWAY CAR
FEEDER FOR CONVEYING LOOSE MATERIALS THROUGH PIPELINE IN PRESSURIZED WORKING FLUID STREAM
DEVICE FOR TRANSFERRING ARTICLES BETWEEN CONVEYER
SCREW FEEDER
BELT-ROPE CONVEYER
