Invention Grant
- Patent Title: Sanitary bail-ring.
- Patent Title (中): 卫生级戒指
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Application No.: US15291417Application Date: 1917-03-06
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Publication No.: US1244980APublication Date: 1917-10-30
- Inventor: HARTMAN GEORGE ALBERT SR
- Applicant: HARTMAN GEORGE ALBERT SR
- Assignee: George Albert Hartman Sr
- Current Assignee: George Albert Hartman Sr
- Priority: US15291417 1917-03-06
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