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
Well reamer
摘要
申请公布号
US2199693(A)
申请公布日期
1940.05.07
申请号
US19380241205
申请日期
1938.11.18
申请人
GLOBE OIL TOOLS COMPANY
发明人
CATLAND ALFRED C.
分类号
E21B10/30
主分类号
E21B10/30
代理机构
代理人
主权项
地址
您可能感兴趣的专利
DEVICE AND PROCESS FOR TIME STAMPING, RECEIVER, SYSTEM FOR DELAYED BROADCASTING AND STRING OF CORRESPONDING PACKETS
Dynamic laser balancing
PREDICTION OF FUNCTIONAL AND STRUCTURAL PROPERTIES OF POLYPEPTIDES
Liquid-gas manifold for a matter and/or heat exchange column and column using such a manifold
An electromagnetic coupler
Method and system for producing display material
GRADED INDEX WAVEGUIDE
PARTICLE SIZING AND CONCENTRATION SENSOR USING A HOLLOW SHAPED BEAM
CURABLE FLUOROELASTOMER COMPOSITIONS COMPRISING HYDRO SILOXANES OR HYDRO SILAZANES
SYNTHESIS OF KETOSULFONE ESTERS
HAIR PROTECTION COMPOSITIONS
METHOD FOR ALLEVIATING SYNDROMES AND CONDITIONS OF DISCOMFORT OF THE MAMMALIAN INTESTINAL AND GENITO-URINARY TRACTS
Integrating light mixer
CHAIRS
METHOD FOR POWER CONTROL FOR MIXED VOICE AND DATA TRANSMISSION
MIKANOLIDE DERIVATIVES, THEIR PREPARATION AND THERAPEUTIC USES
Ventilation system for rooms in a building
CONVOGLIATORE ARIA APPLICABILE ANCHE PER ELETTRODOMESTICI CAPPE DACUCINA IN PLASTICA O METALLO ALIMENTATO DA MOTORE ELETTRICO
LAMA DA TAGLIO, IN PARTICOLARE PER NASTRO ADESIVO
RASCHIETTO IN PLASTICA PER LA PULIZIA DELLA LINGUA