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| US5636561 | 26 Abr 1995 | 10 Jun 1997 | | Volumetric fluid machine equipped with pistons without connecting rods | | US6321693 | 1 May 2000 | 27 Nov 2001 | | Reciprocating rotary piston system and pressure pump and internal combustion engine using the same | | US6382143 | 3 May 2001 | 7 May 2002 | | Balanced modular pendulum mechanism |
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