{"id":621702,"date":"2026-01-18T21:01:16","date_gmt":"2026-01-18T20:01:16","guid":{"rendered":"https:\/\/cronologia-universale.it\/1896-6\/"},"modified":"2026-01-18T21:01:16","modified_gmt":"2026-01-18T20:01:16","slug":"october-21-1879-3","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/october-21-1879-3\/","title":{"rendered":"October 21, 1879"},"content":{"rendered":"<p>Thomas Edison&#8217;s invention of the carbon-filament incandescent lamp, as in many other cases of \u201cinventions,\u201d is actually based on ideas developed, and patented, by other \u201cinventors\u201d from 1841 to 1878. Similar arguments could be made for the Wright brothers&#8217; airplane, Morse&#8217;s telegraph, etc. etc.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thomas Edison&#8217;s invention of the carbon-filament incandescent lamp, as in many other cases of \u201cinventions,\u201d&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[40],"tags":[],"class_list":["post-621702","post","type-post","status-publish","format-standard","hentry","category-mt-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>October 21, 1879 - Cronologia Universale<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cronologia-universale.it\/en\/october-21-1879-3\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"October 21, 1879 - Cronologia Universale\" \/>\n<meta property=\"og:description\" content=\"Thomas Edison&#8217;s invention of the carbon-filament incandescent lamp, as in many other cases of \u201cinventions,\u201d...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cronologia-universale.it\/en\/october-21-1879-3\/\" \/>\n<meta property=\"og:site_name\" content=\"Cronologia Universale\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-18T20:01:16+00:00\" \/>\n<meta name=\"author\" content=\"Rick\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Rick\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/cronologia-universale.it\/en\/october-21-1879-3\/\",\"url\":\"https:\/\/cronologia-universale.it\/en\/october-21-1879-3\/\",\"name\":\"October 21, 1879 - 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