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This was the forerunner of all the designs that come after.
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This pump was the first machine in which all its moving parts rotated according to a rotary motion.
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This was the world's first rotary steam machine/engine
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William Murdock laid the foundation for the development of the rotary engine with his creation of a rotary steam engine.
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This was first rotary piston engine with involute epicycloid shape and its respective involute for external line.
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Jones modified Pappenheim's gear pump and produced a double rotor with only two teeth per gear.
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Alotham and Franchot designed a vane compressor that passed through a shaft and rotated inside a cycloidal shell.
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This was wankel's first rotary combustion engine and was the most used by the NSU and Mazda between the 60's to 2012, this engine was used in the Mazda 787B in the 24h of LeMans and when the race finished they saw the engine and it was ready for another race, demostrating the durability of it.