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#190009 11/03/09 01:50 AM
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Joined: Nov 2002
Posts: 790
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wa2ise Offline OP
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Very old recepticle patents

Looks like the 1-15 plug and outlet was developed at least by 1914, a year before the 3 prong grounding plug was done, the Aussie style one I posted last week
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Joined: Aug 2005
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C
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Gaynor Receptacle This looks to be the single version of the duplex receptacle patent.


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