| http://www.w3.org/ns/prov#value | - U.S. patent number 5,251,594 was granted to Leonard Meyer of Illinois in 1993 for a nutating internal combustion disc engine.[1] The Meyer Nutating Engine is a new type of internal combustion engine with higher power density than conventional reciprocating piston engines and which can operate on a variety of fuels, including gasoline, heavy fuels and hydrogen.
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