Invention Grant
- Patent Title: Spring-hinge.
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Application No.: US1899004823Application Date: 1899-03-02
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Publication No.: US657982APublication Date: 1900-09-18
- Inventor: GERWIEN WILLIAM
- Applicant: GERWIEN WILLIAM
- Assignee: William Gerwien
- Current Assignee: William Gerwien
- Priority: US1899004823 1899-03-02
Information query
