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Safety buckle
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Patent number 4,099,306
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Issue date Jul 11, 1978
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Frank M. Matthews
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A44 - HABERDASHERY JEWELLERY
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3196509
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Patent number 3,196,509
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Issue date Jul 27, 1965
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A44 - HABERDASHERY JEWELLERY
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3170210
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Patent number 3,170,210
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Issue date Feb 23, 1965
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A44 - HABERDASHERY JEWELLERY
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2372558
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Patent number 2,372,558
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Issue date Mar 27, 1945
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A62 - LIFE-SAVING FIRE-FIGHTING
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1907098
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Patent number 1,907,098
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Issue date May 2, 1933
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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1877704
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Patent number 1,877,704
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Issue date Sep 13, 1932
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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1303652
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Patent number 1,303,652
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Issue date May 13, 1919
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A44 - HABERDASHERY JEWELLERY
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1158827
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Patent number 1,158,827
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Issue date Nov 2, 1915
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B60 - VEHICLES IN GENERAL