IP Library › Granted Patent US 1,081,009
Granted Patent S1
US 1,081,009 · App. 29/919,582 · Granted Jun 24, 2025

Exhaust valve for a mask

Inventor: Jong Seok Park (Gwacheon-si, KR)
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Quick Facts
Patent No.
US 1,081,009
App. No.
29/919,582
Granted
Jun 24, 2025
Kind
S1
Claims (1)

The ornamental design for an exhaust valve for a mask as shown and described.

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Wholesale Mask Breathing Valve for DIY Mask Accessories Homemaking One-Way Exhaust Mask Valves in Black and White FY9144,https://www.dhgate.com/product/wholesale-mask-breathing-valve-for-diy-mask/558127652.html?skuld=74… [cited by examiner]
3M 6500 6501 6502 6503 Half Face Mask Respirator Exhaust Valve Filter,https://cults3d.com/en/3d-model/tool/3m-6500-6501-6502-6503-half-face-mask-respirator-exhaust-valve-filter,Aug. 7, 2020. (Year: 2020). [cited by examiner]