Invention Grant
- Patent Title: Well explosive
- Patent Title (中): 爆炸性好
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Application No.: US26253139Application Date: 1939-03-17
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Publication No.: US2307729APublication Date: 1943-01-05
- Inventor: LEWIS FOSTER JAMES
- Applicant: LEWIS FOSTER JAMES
- Assignee: Foster James Lewis
- Current Assignee: Foster James Lewis
- Priority: US26253139 1939-03-17
- Main IPC: E21B43/116
- IPC: E21B43/116
Information query
