Invention Grant
- Patent Title: Electric-circuit breaker.
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Application No.: US1903151384Application Date: 1903-04-06
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Publication No.: US810751APublication Date: 1906-01-23
- Inventor: HARTMAN FRANK O
- Applicant: HARTMAN FRANK O
- Assignee: Frank O Hartman
- Current Assignee: Frank O Hartman
- Priority: US1903151384 1903-04-06
Information query
