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Cold protection suit having a protective breathing device

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

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Cold weather breathing apparatus

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

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Combination of a helmet and a respiratror and a method for using

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

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Combination oxygen supplement and swimming snorkel apparatus

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

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Combined aircrew systems tester (CAST)

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

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Combined aircrew systems tester (CAST)

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

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Combined half-mask and hood type protective respiratory device

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

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Compatible smoke and oxygen masks for use on aircraft

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

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Contamination prevention device for diver's breathing apparatus

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

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Cough-a-lizer

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

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Coveralls for protection against flash fires

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

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Customizable mouthpiece for scuba-divers

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

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Deep diving apparatus

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

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Deep diving breathing systems

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

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Deep sea diving system having a closed respiratory gas circulati

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

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Deep submergence respirator outfit

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

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Delivery conduit for a breathing equipment

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

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Device for improving breathing

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

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Device for improving breathing

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

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Device for providing protection against hypoxia, usable in a...

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

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