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Blade for an ice skate
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Patent number 6,523,835
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Issue date Feb 25, 2003
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Robert M. Lyden
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A63 - SPORTS GAMES AMUSEMENTS
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1886650
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Patent number 1,886,650
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Issue date Nov 8, 1932
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A63 - SPORTS GAMES AMUSEMENTS
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1749298
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Patent number 1,749,298
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Issue date Mar 4, 1930
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A63 - SPORTS GAMES AMUSEMENTS
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1512327
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Patent number 1,512,327
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Issue date Oct 21, 1924
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A63 - SPORTS GAMES AMUSEMENTS