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Heart rate analyzer
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Patent number 4,259,966
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Issue date Apr 7, 1981
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American Optical Corporation
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Robert L. Cannon
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Variable threshold R-wave detector
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Patent number 4,240,442
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Issue date Dec 23, 1980
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American Optical Corporation
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Richard P. Andresen
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Electronic metronome
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Patent number 4,018,131
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Issue date Apr 19, 1977
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Robert L. Cannon
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G04 - HOROLOGY
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Compressed data display system
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Patent number 3,951,135
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Issue date Apr 20, 1976
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American Optical Corporation
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Herbert Emanuel Goldberg
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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