Invention Grant
- Patent Title: Derrick construction
- Patent Title (中): 井架施工
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Application No.: US10147136Application Date: 1936-09-18
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Publication No.: US2086650APublication Date: 1937-07-13
- Inventor: TROUT WILLIAM A
- Applicant: TROUT WILLIAM A
- Assignee: William A Trout
- Current Assignee: William A Trout
- Priority: US10147136 1936-09-18
- Main IPC: E21B15/00
- IPC: E21B15/00
Public/Granted literature
- US06678300B2 Coupled cavity anti-guided vertical-cavity surface-emitting laser Public/Granted day:2004-01-13
Information query
