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device for generating a reciprocating rotary motion of a wave - and with selbsttätiger control drehwinkelgrösse,in particular, for the derivation of a hoisting and lowering of the wave for the ringbän
device for generating a reciprocating rotary motion of a wave - and with selbsttätiger control drehwinkelgrösse,in particular, for the derivation of a hoisting and lowering of the wave for the ringbän
