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Warning device for a vehicle
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Patent number 11,097,655
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Issue date Aug 24, 2021
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ROAD SAFETY DESIGNS LIMITED
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Stephen Wornham
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B60 - VEHICLES IN GENERAL
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Light display means
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Patent number 4,190,312
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Issue date Feb 26, 1980
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Lonnie E. Bailey
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Display device
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Patent number 4,080,747
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Issue date Mar 28, 1978
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Taketoshi Kato
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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1708028
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Patent number 1,708,028
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Issue date Apr 9, 1929
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS