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

Kenneth Frederick Hely

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Facial masks for assisted respiration or CPAP

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

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Mask and harness assembly

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

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Valve for use in a gas delivery system

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

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Valve for use in a gas delivery system

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

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Profile ID: LFUS-PAI-P-573277

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