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Artificial larynx
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Patent number 4,672,673
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Issue date Jun 9, 1987
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Thomas Jefferson University
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Philip Katz
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Artificial larynx
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Patent number 4,550,427
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Issue date Oct 29, 1985
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Thomas Jefferson University
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Philip Katz
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Artificial larynx
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Patent number 4,502,150
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Issue date Feb 26, 1985
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Thomas Jefferson University
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Philip Katz
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Artificial larynx
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Patent number 4,473,905
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Issue date Sep 25, 1984
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Thomas Jefferson University
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Philip Katz
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE