Invention Grant
- Patent Title: Retractable spacer ring for valve seats
- Patent Title (中): 用于阀座的可伸缩间隔环
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Application No.: US19441962Application Date: 1962-05-14
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Publication No.: US3219055APublication Date: 1965-11-23
- Inventor: DUMM ROBERT P
- Applicant: PACIFIC VALVES INC
- Assignee: Pacific Valves Inc
- Current Assignee: Pacific Valves Inc
- Priority: US19441962 1962-05-14
- Main IPC: F16K5/06
- IPC: F16K5/06
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