Planetary Gearbox: first invented in 87

^Planetary Gearbox: first invented in 87 BC. Wow. You'll see a couple of postings about this. Sorry! It was invented, then lost for a very long time. This part of your car (part of your transmission) was first come up with over 2000 years ago. But it took another 1500 years for the next reinvention…^

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