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Fuel cell
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Patent number 6,630,269
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Issue date Oct 7, 2003
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Firma Carl Freudenberg
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Thomas Barth
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Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
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Regulating valve
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Patent number 5,893,392
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Issue date Apr 13, 1999
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Firma Carl Freudenberg
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Karl-Heinz Spies
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Regulating valve
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Patent number 5,617,815
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Issue date Apr 8, 1997
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Firma Carl Freudenberg
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Karl-Heinz Spies
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Circumferentially resilient coupler
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Patent number 4,776,824
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Issue date Oct 11, 1988
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Firma Carl Freudenberg
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Thomas Barth
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...