File:Pierce cross-coupled filter.png
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![File:Pierce cross-coupled filter.png](https://upload.wikimedia.org/wikipedia/commons/thumb/6/66/Pierce_cross-coupled_filter.png/800px-Pierce_cross-coupled_filter.png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:32, 25 October 2014 | ![]() | 939 × 572 (224 KB) | commons>Wdwd | == {{int:filedesc}} == {{Information |Description={{en|Cross-coupled filter in waveguide, described by the inventor as "paralleled resonator transducers".}} |Source=Transferred from [http://en.wikipedia.org en.wikipedia] |Date=4th May 1948 (filed)<br/>... |
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