File:Pierce cross-coupled filter.png
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Description |
Cross-coupled filter in waveguide, described by the inventor as "paralleled resonator transducers". |
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Source | |
Date |
4th May 1948 (filed) |
Author | |
Permission (Reusing this file) |
See below.
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Licensing[edit]
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.[1][2][3]
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 | |
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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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- File:Pierce cross-coupled filter.png from Commons