4. Surgery
  5. Respiratory method or device
  6. Including body or head supported means covering user's scalp

John A. Scavnicky

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Gas separation: apparatus – Electric field separation apparatus – Electric charge produced by friction
Patent

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Lightweight protective gas mask and hood

Surgery – Respiratory method or device – Including body or head supported means covering user's scalp
Patent

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Protective mask for airborne toxic substances

Surgery – Respiratory method or device – Means for transmitting – or facilitating – voice communication...
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Profile ID: LFUS-PAI-P-801572

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