Invention Grant
- Patent Title: Circuit-breaker.
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Application No.: US1904195225Application Date: 1904-02-25
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Publication No.: US844353APublication Date: 1907-02-19
- Inventor: HARTMAN FRANK O
- Applicant: HARTMAN FRANK O
- Assignee: Frank O Hartman
- Current Assignee: Frank O Hartman
- Priority: US1904195225 1904-02-25
Information query
