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Atraumatic screw-in lead
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Patent number 5,003,992
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Issue date Apr 2, 1991
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Timothy W. Holleman
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Drug delivery system
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Patent number 4,731,058
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Issue date Mar 15, 1988
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Pharmacia Deltec, Inc.
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Phong D. Doan
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Drug delivery system
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Patent number 4,650,469
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Issue date Mar 17, 1987
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Deltec Systems, Inc.
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Harvey F. Berg
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE