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Quick-action flap
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Patent number 5,213,306
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Issue date May 25, 1993
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ASEA Brown Boveri Ltd.
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Heinrich Lageder
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Return mechanism of an actuating drive
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Patent number 4,802,403
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Issue date Feb 7, 1989
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BBC Brown, Boveri & Company, Ltd.
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Heinrich Lageder
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Sprung suspension of an actuating piston
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Patent number 4,774,876
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Issue date Oct 4, 1988
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BBC Brown, Boveri Ltd.
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Heinrich Lageder
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...