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Spinal acupressure device
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Patent number 5,445,647
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Issue date Aug 29, 1995
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Daniel S. J. Choy
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Spinal acupressure device
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Patent number 5,290,307
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Issue date Mar 1, 1994
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Daniel S. J. Choy
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Heart assist device
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Patent number 4,902,273
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Issue date Feb 20, 1990
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Daniel S. J. Choy
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Laser tunnelling device
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Patent number 4,207,874
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Issue date Jun 17, 1980
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Daniel S. J. Choy
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE