Invention Grant
- Patent Title: Electrical borehole heater
- Patent Title (中): 电钻孔加热器
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Application No.: US86287659Application Date: 1959-12-30
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Publication No.: US3131763APublication Date: 1964-05-05
- Inventor: KUNETKA ROBERT E , BEDNARSKI VALERY N , TOWELL BILLY H , WOODWARD CHARLES D
- Applicant: TEXACO INC
- Assignee: Texaco Inc
- Current Assignee: Texaco Inc
- Priority: US86287659 1959-12-30
- Main IPC: E21B36/04
- IPC: E21B36/04
Information query
