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1997-12-30 |
Bledstein; Adrien Janis |
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1997-09-03 |
1999-10-05 |
Cabot Safety Intermediate Corporation |
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3M Innovative Properties Company |
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2012-09-10 |
株式会社重松製作所 |
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2009-05-29 |
2011-12-29 |
Filligent Ltd |
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Prestige Ameritech Ltd. |
Flat folded ear loop face mask
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2017-08-18 |
霍尼韦尔国际公司 |
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2023-01-10 |
3M Innovative Properties Company |
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Flat-fold respirator and method of making same
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Profit Royal Pharmaceutical Limited |
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2018-01-25 |
3M Innovative Properties Company |
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Ascend Eagle Incorporated |
Medical mask
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2021-04-06 |
Makrite Industries Inc. |
Valve structure for respirator
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2022-05-10 |
D6 Inc. |
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2021-10-04 |
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2021-06-25 |
2023-02-28 |
Safemed Ip Holdings, Llc |
Personal protective mask
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