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Spirometer
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Patent number 4,462,410
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Issue date Jul 31, 1984
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LSE Corp.
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Maurice R. Blais
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Incentive spirometer
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Patent number 4,096,855
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Issue date Jun 27, 1978
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George J. Fleury
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Spirometer
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Patent number 3,985,124
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Issue date Oct 12, 1976
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Thermo Electron Corporation
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Steven J. Coleman
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Computerized pulmonary analyzer
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Patent number 3,977,394
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Issue date Aug 31, 1976
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Jones Medical Instrument Company
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William C. Jones
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3785370
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Patent number 3,785,370
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Issue date Jan 15, 1974
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3742939
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Patent number 3,742,939
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Issue date Jul 3, 1973
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3722506
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Patent number 3,722,506
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Issue date Mar 27, 1973
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3589190
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Patent number 3,589,190
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Issue date Jun 29, 1971
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3533398
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Patent number 3,533,398
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Issue date Oct 13, 1970
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3516401
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Patent number 3,516,401
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Issue date Jun 23, 1970
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3363260
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Patent number 3,363,260
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Issue date Jan 9, 1968
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2999495
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Patent number 2,999,495
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Issue date Sep 12, 1961
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2709430
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Patent number 2,709,430
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Issue date May 31, 1955
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2198230
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Patent number 2,198,230
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Issue date Apr 23, 1940
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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1863929
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Patent number 1,863,929
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Issue date Jun 21, 1932
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE