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Golf simulator apparatus
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Patent number 5,226,660
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Issue date Jul 13, 1993
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Donald B. Curchod
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A63 - SPORTS GAMES AMUSEMENTS
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Wheel balancing machine
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Patent number 4,352,291
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Issue date Oct 5, 1982
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Nortron Corporation
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Donald B. Curchod
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G01 - MEASURING TESTING
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Wheel balancing system
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Patent number 4,267,730
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Issue date May 19, 1981
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Nortron Corporation
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Donald B. Curchod
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G01 - MEASURING TESTING
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Punching bag simulator
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Patent number 4,239,209
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Issue date Dec 16, 1980
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American Fitness, Inc.
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Donald B. Curchod
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A63 - SPORTS GAMES AMUSEMENTS
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Scale construction
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Patent number 4,174,760
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Issue date Nov 20, 1979
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Nortron Corporation
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Donald B. Curchod
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G01 - MEASURING TESTING
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