File:Esther Marion MacInnis (1923).jpg

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Esther_Marion_MacInnis_(1923).jpg ‎(167 × 216 pixels, file size: 14 KB, MIME type: image/jpeg)

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English: Esther Marion MacInnis, wife of American engineer Edwin Armstrong, inventor of the superheterodyne radio receiver, photographed in Palm Beach, Florida, in 1923.
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: Edwin Armstrong wife and portable superhet radio.jpg
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current00:40, 8 June 2018Thumbnail for version as of 00:40, 8 June 2018167 × 216 (14 KB)Laddo (talk | contribs)File:Edwin Armstrong wife and portable superhet radio.jpg cropped 66 % horizontally, 34 % vertically using CropTool with lossless mode. Crop for Wikidata.

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