4. Combustion
  5. Illuminating flash device, e.g., photographic bulb, etc.
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Hand operable emergency signaling device

Combustion – Illuminating flash device – e.g. – photographic bulb – etc. – Fuel charge within sealed transparent casing – e.g. – bulb
Patent

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Hand-operable signal device using percussively-ignitable flashla

Combustion – Illuminating flash device – e.g. – photographic bulb – etc. – Fuel charge within sealed transparent casing – e.g. – bulb
Patent

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High efficiency photographic flash lamp

Combustion – Illuminating flash device – e.g. – photographic bulb – etc. – Fuel charge within sealed transparent casing – e.g. – bulb
Patent

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High voltage flashlamp with ignition means including a plurality

Combustion – Illuminating flash device – e.g. – photographic bulb – etc. – Fuel charge within sealed transparent casing – e.g. – bulb
Patent

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Humidity protected radiation-responsive switch

Combustion – Illuminating flash device – e.g. – photographic bulb – etc. – Fuel charge within sealed transparent casing – e.g. – bulb
Patent

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