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Dual hearing protection system
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Patent number 12,295,813
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Issue date May 13, 2025
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3M Innovative Properties Company
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Paul D. Henry
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Pair of in-ear hearing protectors
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Patent number D1061862
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Issue date Feb 11, 2025
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3M Innovative Properties Company
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Mark A. Yoder
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D24 - Medical and laboratory equipment
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System control unit
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Patent number D1028949
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Issue date May 28, 2024
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3M Innovative Properties Company
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William P. Atwood
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D14 - Recording, communication, or information retrieval equipment
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Dual hearing protection system
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Patent number 11,963,849
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Issue date Apr 23, 2024
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3M Innovative Properties Company
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Paul D. Henry
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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System control unit
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Patent number D1011321
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Issue date Jan 16, 2024
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3M Innovative Properties Company
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William Atwood
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D14 - Recording, communication, or information retrieval equipment
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Battery
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Patent number D993165
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Issue date Jul 25, 2023
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3M Innovative Properties Company
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William P. Atwood
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D13 - Equipment for production, distribution, or transformation of energy
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System control unit
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Patent number D983174
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Issue date Apr 11, 2023
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3M Innovative Properties Company
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William P. Atwood
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D14 - Recording, communication, or information retrieval equipment
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