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
Cementing device for well casings
摘要
申请公布号
US2257765(A)
申请公布日期
1941.10.07
申请号
US19390297387
申请日期
1939.09.30
申请人
OIL EQUIPMENT ENGINEERING CORPORATION
发明人
SCARAMUCCI DOMER
分类号
E21B33/14
主分类号
E21B33/14
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD AND DEVICE FOR UTILIZING LATENT ENERGY OF EXPANSIBLE FLUID
SIDE SEAL OF ROTARY PISTON ENGINE AND METHOD OF MANUFACTURING THE SAME
FOAMABLE THERMOPLASTIC RESIN COMPOSITION
MANUFACTURE OF POLYURETHANE PLASTIC
UNSATURATED POLYESTER RESIN COMPOSITION
WATER CURRENT STRENGTH CONTROLLER OF ELECTRIC WASHING MACHINE
ELECTRIC RAZOR WITH TRIMMER MECHANISM
FREQUENT PULSATION TREATMENT DEVICE
VACUUM DOUBLE BOTTLE
PHOTOPOLYMERIZING COMPOSITION
AUXILIARY REED OF LOOM FOR WOVEN FASTENER
PHOTO RECORDER FOR LOWWCARRIER FM SIGNAL
METHOD OF CONNECTING BRANCHED WIRE
SWITCHING DEVICE
OIL ABSORBER FOR BURNER
FEED WATER HEATER
COMBUSTION CONTROL DEVICE FOR OIL BURNER
LIQUID FUEL COMBUSTION DEVICE
FREMGANGSMAADE TIL FREMSTILLING AF POLYMERLATEX
HOESTNINGSMASKINE