| 发明名称 |
Percussion rock drill |
| 摘要 |
|
| 申请公布号 |
US2584330(A) |
申请公布日期 |
1952.02.05 |
| 申请号 |
US19500165635 |
申请日期 |
1950.06.02 |
| 申请人 |
ERNEST CRAIG |
发明人 |
CRAIG ERNEST |
| 分类号 |
B25D11/06;E21B1/20 |
主分类号 |
B25D11/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
您可能感兴趣的专利
WATERTIGHT ACCESS COVER WITH ELECTROACTIVE POLYMERS
METHODS FOR PERFORMING A REMOTE MANAGEMENT OF A MULTI-SUBSCRIPTION SIM MODULE, AND CORRESPONDING SIM MODULE AND COMPUTER PROGRAM PRODUCT
METHOD AND APPARATUS FOR MULTIBAND PREDISTORTION USING TIME-SHARED ADAPTATION LOOP
Enhanced Echo Cancellation in Full-Duplex Communication
Shared Workspaces with Selective Content Item Synchronization
ELECTRONIC APPARATUS AND DISPLAY CONTROL METHOD THEREOF
METHOD AND APPARATUS FOR PROVIDING A TRANSITION BETWEEN MAP REPRESENTATIONS ON A USER INTERFACE
DYNAMIC SCROLLING
TOUCH SCREEN PANEL, TOUCH SENSING CONTROLLER, AND TOUCH SENSING SYSTEM INCLUDING THE SAME
ARRAY SUBSTRATE, DRIVE METHOD, DISPLAY PANEL AND DISPLAY DEVICE
TOUCH PANEL AND DISPLAY DEVICE
Devices and Methods for Processing Touch Inputs Based on Their Intensities
ARRAY SUBSTRATE, TOUCH DISPLAY PANEL AND TOUCH DISPLAY DEVICE
TOUCH DISPLAY DEVICE UTLIZING EXTRA CONDUCTIVE LAYER ON THIN FILM TRANSISTOR TO DETECT TOUCH OPERATION
PIXEL CIRCUIT, METHOD FOR DRIVING PIXEL CIRCUIT, ORGANIC LIGHT-EMITTING DIODE DISPLAY PANEL, AND DISPLAY DEVICE
INPUT DEVICE AND DISPLAY DEVICE
TOUCH CONTROL UNIT AND FABRICATING METHOD THEREOF
TERMINAL DEVICE AND OPERATION LOCK RELEASE METHOD
OPERATING SYSTEM, WEARABLE DEVICE, AND OPERATION METHOD
Battery Management in a Device with Multiple Batteries
