4. Surgery
  5. Respiratory method or device
  6. Means for supplying respiratory gas under positive pressure

Ralf Drews

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Breathing apparatus with a display unit

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

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Breathing valve

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

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Protective breathing mask

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

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Protective hood made of an elastic material

Apparel – Head coverings – Hoods
Patent

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Respirator with a breathing filter

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

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Profile ID: LFUS-PAI-P-548119

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