Invention Grant
- Patent Title: Valve-motion.
- Patent Title (中): 阀门运动。
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Application No.: US1906300463Application Date: 1906-02-10
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Publication No.: US845154APublication Date: 1907-02-26
- Inventor: WILLIAMS JOHN H
- Applicant: WILLIAMS JOHN H
- Assignee: John H Williams
- Current Assignee: John H Williams
- Priority: US1906300463 1906-02-10
Information query
