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
Natural gas well heater
摘要
申请公布号
US1934955(A)
申请公布日期
1933.11.14
申请号
US19310548812
申请日期
1931.07.06
申请人
CHARLES THRUPP EDGAR
发明人
THRUPP EDGAR CHARLES
分类号
E21B36/04
主分类号
E21B36/04
代理机构
代理人
主权项
地址
您可能感兴趣的专利
RECORDING AND REPRODUCING DEVICE AND ITS CONTROL METHOD
RECORDING/REPRODUCING/ERASING METHOD OF INFORMATION RECORDING MEDIUM, ERASING METHOD OF INFORMATION RECORDING MEDIUM, AND RECORDING/REPRODUCING/ERASING APPARATUS OF INFORMATION RECORDING MEDIUM
MAGNETO-OPTICAL DISK APPARATUS
DISK LOADING DEVICE
SEMICONDUCTOR STORAGE DEVICE
CREATION METHOD OF CONTROL PROGRAM
DIGITAL SERVO SYSTEM WITH MOVING AVERAGE FILTER
RECORDING AND REPRODUCING DEVICE, AND PROGRAM
SEARCH SYSTEM AND COMPUTER PROGRAM
OUTDOOR INSTALLATION TYPE COMMUNICATION EQUIPMENT
CONTROL APPARATUS OF AUTOMATIC VENDING MACHINE
FILE SYSTEM HAVING AUTHENTICATION OF POSTPONED DATA INTEGRITY
PROJECTION TYPE GUIDANCE DEVICE AND GUIDING DIRECTION DISPLAY METHOD
MANAGEMENT SYSTEM IN DISTRIBUTED COMPUTING ENVIRONMENT
RETRIEVAL SYSTEM AND MOBILE COMMUNICATION TERMINAL
SYSTEM SIMULATOR, SYSTEM SIMULATION METHOD, CONTROL PROGRAM, AND READABLE RECORDING MEDIUM
POS SYSTEM AND POS CONTROL SYSTEM
VERIFICATION PROGRAM FOR PROGRAM, VERIFICATION DEVICE FOR PROGRAM, AND VERIFICATION METHOD FOR PROGRAM
SYSTEM FOR DETECTING BREAK OF SEAL
METER READING SYSTEM
