Invention Grant
- Patent Title: Switch-point.
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Application No.: US1905287280Application Date: 1905-11-14
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Publication No.: US859404APublication Date: 1907-07-09
- Inventor: MITCHELL WILLIAM M
- Applicant: MITCHELL WILLIAM M
- Assignee: William M Mitchell
- Current Assignee: William M Mitchell
- Priority: US1905287280 1905-11-14
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