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Pneumatic hydraulic retractable device
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Patent number 11,933,330
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Issue date Mar 19, 2024
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J. D Components Co., Ltd.
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Pin-Chieh Feng
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Pneumatic-hydraulic control valve
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Patent number 11,572,963
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Issue date Feb 7, 2023
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J. D Components Co., Ltd.
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Pin-Chieh Feng
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Three-piece stem of bicycle
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Patent number 9,616,962
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Issue date Apr 11, 2017
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J. D Components Co., Ltd.
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Pin-Chien Feng
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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Tricycle
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Patent number 6,851,694
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Issue date Feb 8, 2005
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Melton International L.L.C.
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Pin-Chieh Feng
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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Foldable tricycle
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Patent number 6,517,093
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Issue date Feb 11, 2003
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Melton International L.L.C.
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Pin-Chieh Feng
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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Fast dismantling device
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Patent number 6,474,900
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Issue date Nov 5, 2002
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Melton International L.L.C.
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Pin-Chieh Feng
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Tricycle
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Patent number 6,467,781
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Issue date Oct 22, 2002
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Melton International L.L.C.
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Pin-Chieh Feng
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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Bending mechanism of rod
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Patent number 6,467,986
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Issue date Oct 22, 2002
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Melton International L.L.C.
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Pin-Chieh Feng
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G05 - CONTROLLING REGULATING