Invention Grant
- Patent Title: Well surveying device
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Application No.: US16591737Application Date: 1937-09-27
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Publication No.: US2167072APublication Date: 1939-07-25
- Inventor: HENDRICKSON RALPH E
- Applicant: LANE WELLS CO
- Assignee: Lane Wells Co
- Current Assignee: Lane Wells Co
- Priority: US16591737 1937-09-27
- Main IPC: E21B47/022
- IPC: E21B47/022
Public/Granted literature
- US10587285B1 Hardware friendly data compression Public/Granted day:2020-03-10
Information query
