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Combined headset with mask
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Patent number D1005493
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Issue date Nov 21, 2023
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Eyedetec Medical, Inc.
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Barry Linder
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D24 - Medical and laboratory equipment
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Self-heating flexible package
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Patent number 6,289,889
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Issue date Sep 18, 2001
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TDA Research, Inc.
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William L. Bell
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Portable heat source
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Patent number 6,248,257
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Issue date Jun 19, 2001
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TDA Research, Inc.
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William L. Bell
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F24 - HEATING RANGES VENTILATING