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System for vibration control
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Patent number 6,959,484
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Issue date Nov 1, 2005
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Cymer, Inc.
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Ronald Spangler
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Sports implement
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Patent number 6,485,380
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Issue date Nov 26, 2002
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Active Control eXperts, Inc.
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Ronald Spangler
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A63 - SPORTS GAMES AMUSEMENTS
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Golf club
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Patent number 6,196,935
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Issue date Mar 6, 2001
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Active Control eXperts, Inc.
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Ronald Spangler
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A63 - SPORTS GAMES AMUSEMENTS
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Baseball hat
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Patent number 6,086,490
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Issue date Jul 11, 2000
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Active Control eXperts, Inc.
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Ronald Spangler
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A63 - SPORTS GAMES AMUSEMENTS