File:Patent 6281.jpg

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current19:35, 10 July 2009Thumbnail for version as of 19:35, 10 July 2009622 × 536 (35 KB)Doug Coldwell{{Information |Description={{en|1=Saety pin, patent 6281}} |Source=http://www.google.com/patents/about?id=4vBEAAAAEBAJ&dq=Walter+Hunt |Author=U.S. Patent Office - inventor Walter Hunt |Date=April 10, 1849 |Permission= |other_versions= }} [[Category:Inven

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