Invention Grant
- Patent Title: Pipe recess locking device
- Patent Title (中): 管道凹槽锁定装置
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Application No.: US13358661Application Date: 1961-08-24
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Publication No.: US3071192APublication Date: 1963-01-01
- Inventor: RAULINS GEORGE M
- Applicant: CAMCO INC
- Assignee: Camco Inc
- Current Assignee: Camco Inc
- Priority: US13358661 1961-08-24
- Main IPC: E21B23/02
- IPC: E21B23/02
Public/Granted literature
- US08819598B1 Multipage navigation on a small screen device Public/Granted day:2014-08-26
Information query
