Invention Grant
- Patent Title: Spring-hinge.
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Application No.: US1903144672Application Date: 1903-02-24
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Publication No.: US746272APublication Date: 1903-12-08
- Inventor: BOMMER EMIL
- Applicant: BOMMER EMIL
- Assignee: Emil Bommer
- Current Assignee: Emil Bommer
- Priority: US1903144672 1903-02-24
Information query
