4. Surgery
  5. Respiratory method or device
  6. Face mask covering a breathing passage

Shigematsu Works Co., Ltd.

Corporate Assignee

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Air-feed type dust protective helmet

Apparel – Guard or protector – For wearer's head
Patent

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Exhalation valve means of a respiration mask

Surgery – Respiratory method or device – Face mask covering a breathing passage
Patent

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Face shield assembly

Apparel – Guard or protector – For wearer's head
Patent

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Mask

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate

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Mask

Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Patent

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Profile ID: LFUS-PAI-P-36849

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