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Reinforced jewelry clasp
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Patent number 4,833,761
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Issue date May 30, 1989
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Do-All Jewelry M'f'g. Co., Inc.
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Simon Geldwerth
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A44 - HABERDASHERY JEWELLERY
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Reinforced jewelry clasp
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Patent number 4,697,315
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Issue date Oct 6, 1987
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Do-All Jewelry Mfg. Co., Inc.
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Simon Geldwerth
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A44 - HABERDASHERY JEWELLERY
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Axial jewelry clasp
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Patent number 4,170,809
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Issue date Oct 16, 1979
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Do-All Jewelry Mfg. Co., Inc.
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Simon Geldwerth
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A44 - HABERDASHERY JEWELLERY