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I need help finding a buyer for the machine made in this patents filing time?

I currently possess this machine made by Fred Franke & Co serial numbered #10086.Also the bearing states EC-100 & 1.I'm not sure who to contact in regards to this important find but i can be ...
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Why is this valid?

In regards to US 7771509 B1 As soon as I was taught that O2 is para-magnetic, a magnetic separation technique with flowing air and multiple stages seemed like a fairly trivial process for separation. ...