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As for the patent bit, getting a lawyer to do the patent search, then file yours if it's clear is pretty expensive. The ones I've seen were anywhere from $10k on up
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My Pop-Pop's Business supplied rock salt (for when the roads get icy or snowy) to much of the northeast. Salt that sat over the summer would become bonded together like concrete.
He created a machine that backhoes could drop the salt into then chop up and vibrate the clumps back to their original state and drop them onto the conveyer belt so it was only one extra step in the trasportation process.
To get the machine and how it works with a conveyer patented it cost him $17,000 roughly 10 years ago. Their not cheap.
Ok, now that I look, that more or less turned out to be a post braggin about my Grandpa.
Sorry
