Invention Grant
- Patent Title: Filter.
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Application No.: US1899704248Application Date: 1899-02-02
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Publication No.: US635745APublication Date: 1899-10-31
- Inventor: CLAASSEN HEINRICH WILHELM HERMAN
- Applicant: CLAASSEN HEINRICH WILHELM HERMAN
- Assignee: Heinrich Wilhelm Herman Claassen
- Current Assignee: Heinrich Wilhelm Herman Claassen
- Priority: US1899704248 1899-02-02
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