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Lens system
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Patent number 5,995,280
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Issue date Nov 30, 1999
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Her Majesty The Queen in Right of New Zealand
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Allan David Beach
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G02 - OPTICS
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Lens system
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Patent number 5,734,496
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Issue date Mar 31, 1998
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Her Majesty The Queen in Right of New Zealand
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Allan David Beach
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G02 - OPTICS
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Retro-reflectors
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Patent number 4,930,870
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Issue date Jun 5, 1990
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ITW New Zealand Limited
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Allan D. Beach
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES