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Shark barrier
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Patent number 10,883,239
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Issue date Jan 5, 2021
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Stellenbosch University
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Michael Rutzen
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Miniature hydro-power generation system
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Patent number 7,956,481
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Issue date Jun 7, 2011
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Access Business Group International LLC
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David W. Baarman
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F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
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Miniature hydro-power generation system
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Patent number 7,768,147
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Issue date Aug 3, 2010
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Access Business Group International, LLC
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David W. Baarman
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Miniature hydro-power generation system
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Patent number 7,675,188
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Issue date Mar 9, 2010
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Access Business Group International, LLC
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David W. Baarman
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Power source
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Patent number 6,472,846
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Issue date Oct 29, 2002
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Freeplay Market Development Limited
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John Edward Hutchinson
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Radio
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Patent number D428873
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Issue date Aug 1, 2000
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Freeplay Market Development Limited
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John Edward Hutchinson
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D14 - Recording, communication, or information retrieval equipment
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Lantern
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Patent number D417922
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Issue date Dec 21, 1999
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Freeplay Energy Holdings Limited
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Roelf Mulder
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D26 - Lighting