| 发明名称 |
Well cleaning device |
| 摘要 |
|
| 申请公布号 |
US2059631(A) |
申请公布日期 |
1936.11.03 |
| 申请号 |
US19350022282 |
申请日期 |
1935.05.20 |
| 申请人 |
JOHN GRANT |
发明人 |
ERWIN WELDON C. |
| 分类号 |
E21B37/08 |
主分类号 |
E21B37/08 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
您可能感兴趣的专利
CLUTCH AND MOTOR
RESISTOR FOR DETECTING CURRENT
DEVICE AND METHOD FOR PROCESSING INFORMATION AND PROGRAM STORAGE MEDIUM
CURRENT TRANSFORMER FOR GAS-INSULATED ELECTRICAL FACILITY
PORTABLE ELECTRONIC EQUIPMENT HAVING HANDWRITING CHARACTER RECOGNIZING FUNCTION
TOUCH PANEL TYPE OPERATING PART
IMAGE DISPLAY DEVICE
SERVER
SERVER UNIT, DEVICE UNIT, CLIENT UNIT, DATA PROCESSING METHOD FOR SERVER UNIT, DATA PROCESSING METHOD FOR DEVICE UNIT, DATA PROCESSING METHOD FOR CLIENT UNIT, AND STORAGE MEDIUM
DATA OUTPUT SUPPORTING SYSTEM, OUTPUT TERMINAL AND STORAGE MEDIUM HAVING DATA OUTPUT SUPPORTING PROGRAM STORED THEREON
INTERNAL COMBUSTION ENGINE EQUIPPED WITH EXHAUST PIPE WALL TEMPERATURE ESTIMATING DEVICE
COMMUNICATION SYSTEM, SERVER TERMINAL, SERVER, AND CHARGING SYSTEM
AIR-FUEL RATIO CONTROL DEVICE FOR EXHAUST GAS OF INTERNAL COMBUSTION ENGINE
SOLAR CELL PANEL
ELECTRIC DEVICE EQUIPPED WITH LOADING DEVICE
ELECTROMAGNETIC JOINT DEVICE FOR EXCAVATION DIRECTION CONTROLLER OF EXCAVATOR
IGNITER FOR INTERNAL COMBUSTION ENGINE
ROLLER TYPE POINTING DEVICE
METHOD AND DEVICE FOR TRANSFERRING CONDUCTIVE BALL
FIXING DEVICE
