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Why is there no such machine to buy on the market?

In reference to the patent: US6630806

closed as off-topic by Pushpak, user4545, vallismortis, Matthew Haugen Oct 16 '15 at 8:08

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "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." – Pushpak, user4545, vallismortis, Matthew Haugen
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