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
Rotary bit
摘要
申请公布号
US2121202(A)
申请公布日期
1938.06.21
申请号
US19350011801
申请日期
1935.03.19
申请人
KILLGORE ROBERT J
发明人
KILLGORE ROBERT J.
分类号
E21B10/00;E21B10/12;E21B10/52;E21B10/56;E21B10/567
主分类号
E21B10/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
NON-FLUTING PRINTED SUBSTRATE AND METHOD FOR PRODUCING THE SAME
PRESSURISER FOR A PRESSURISED WATER NUCLEAR POWER PLANT
RAPID THERMAL FIRING IR CONVEYOR FURNACE HAVING HIGH INTENSITY HEATING SECTION
DETECTION APPARATUS AND DETECTION METHOD FOR MAGNETIC SUBSTANCE
COMPRESSOR WITH MULTIPLE INLETS
MOTOR VEHICLE DISPLAY INSTRUMENT HAVING AN EMBRACING INDICATOR
INTERACTIVE WATERPLAY APPARATUS AND METHODS
METHODS FOR REJUVENATING CELLS IN VITRO AND IN VIVO
NANOCOMPOSITES OF REPEAT SEQUENCE PROTEINS AND PHYLLOSILICATE CLAYS AND THEIR PREPARATION
FLUORO-SUBSTITUTED BENZOXAZOLE POLYMETHINE DYES
REAGENTS FOR THE DETECTION OF PROTEIN PHOSPHORYLATION IN CARCINOMA SIGNALING PATHWAYS
COMPOSITIONS AND METHODS FOR PREDICTING BODY SIZE IN DOGS
USE OF DOPAMINE STABILIZERS
PRESENTING AND NAVIGATING CONTENT HAVING VARYING PROPERTIES
ORDER FORCE EFFECTS, STATES AND REACTIONS
APOA-1 PEPTIDE MIMETICS
FAULT PROTECTION DEVICE WITH GROUND TRIP DELAY AND METHOD
POLYESTER AMIDE COPOLYMERS HAVING FREE CARBOXYLIC ACID PENDANT GROUPS
INTEGRATED MULTI-TOUCH SURFACE HAVING VARYING SENSOR GRANULARITY
METHOD AND APPARATUS FOR ADVERTISEMENT DELIVERY IN WIRELESS NETWORKS
