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Oct 7, 2011
I feel like the “boom coaster” concept has been out there floating in the industry for 20+ years. Long enough ago that it could have been patented at the time, either built or not built, and passed the expiration date of the patent by now.

Even in the mid-90s when I was sketching Indy mine cart rides with this very concept, I would have thought there would be prior art for it (i.e., no way was I the first). Of course that would mean reducing it to practice...
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