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| Description |
Cross-coupled filter in waveguide, described by the inventor as "paralleled resonator transducers". |
|---|---|
| Source | |
| Date |
4th May 1948 (filed) |
| Author | |
| Permission ( Reusing this file) |
See below.
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Licensing
 | The text and illustrations of US patents are in the public domain in the United States unless the patent text contains a specific notice that portions are copyrighted.
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The original patent contains no such notice, so its contents are in the public domain in the United States. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:08, 22 April 2013 |
| 939 × 572 (224 KB) | Spinningspark ( talk | contribs) | {{Information |Description=Cross-coupled filter in waveguide, described by the inventor as "paralleled resonator transducers". |Source=US patent US2626990 |Date=4th May 1948 (filed) |Author= John R. Pierce |other_versions= }} == Licensing == {{PD-U... |
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