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In reference to the patent: US4589438

closed as off-topic by vallismortis, Pushpak, Robert Cartaino Oct 27 '15 at 13:47

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  • "Production and Technology Questions Are Off Topic — Ask Patents is a community-run website to ask about the patent process or to help find Prior Art on US Patents or Applications. Unfortunately, questions about the underlying technology or production of products covered by these patents are outside the scope of this site. Sorry about the confusion." – vallismortis, Pushpak, Robert Cartaino
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