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US-Patent 0024021 from 1859 for a 6-plus-6-keyboard
Alfred Gould and Cyrus Marsh's US patent, 1859 US patent 24,021, entitled "ARRANGEMENT OF KEYBOARD FOR PIANOS, &c" and dated May 17, 1859, names Alfred Gould and Cyrus Marsh as the US-recognised inve6-plus-6 patentsby concertina, 568 days ago, 1 UserPatented European webshop
by Cumbrowski, 2012 days ago, 1 UserUnited States Patent 6880123 - providing interstitial web advertisements to a client computer
by Cumbrowski, 2012 days ago, 1 UserNo Software Patents!
by Cumbrowski, 2012 days ago, 1 UserSoftware Patents vs Parliamentary Democracy
by Cumbrowski, 2012 days ago, 1 UserSoftware Patents - League for Programming Freedom
by Cumbrowski, 2012 days ago, 1 UserUnited States Patent and Trademark Office Home Page
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by Cumbrowski, 2012 days ago, 1 UserBTG hits Amazon, Netflix and others with patent suit - Internet Business News
by Cumbrowski, 2012 days ago, 1 User