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If they have a patent you can read it online with the patent number. Issued patents are in the public domain like mine, US 7677208. If they do not have an issued patent, don't count on one being issued until it actually happens (Patent Pending-but not guaranteed to be approved). I could write a book about my experiences, including finding a very similar design dating back over 120 years, which I was required by law to reveal to the Patent Office.
The problem is the Patent Office has a rejection criteria defined as "obvious to someone educated in the art" a very vague criteria subject to wide variances in interpretation.
They may have patented a combination of individually non patentable devices.
regards
Mech
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