Patent US 4857871A
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| Patent number | US 4857871A (click link for details and documents via Google Patents) |
|---|---|
| Title | Magnetic field-tunable filter with plural section housing and method of making the same |
| Inventors | David L. Harris |
| Company | Harris David L |
| Filing date | 1988-10-31 |
| Grant date | 1989-08-15 |