Hello Billy,
Unless your trying to build it exactly the same and sell it for profit, you don't need to worry about patents. There are 1,000 ways to customize a design, and frankly I don't like that tower system design and would never buy it. I have my own vertical tower design.
P.S.
It's not the whole system that is patented it's the stackable rings that are patented. Often times it's only a specific (unique) part of something that has a patent. You cant patent common things, only unique things. Patents don't ruin the prosperity of the world, they protect it.
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