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US3502883A
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Photoelectric motion detector with a pair of photocells viewing different parts of the field
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High flow relief valves
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Apparatus for catalytically decomposing hydrazine
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Method of fighting mine fires
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Fire extingusihing
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Protective closure for fire-fighting foam generator
|
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Method of extinguishing burning volatile material
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Inflating apparatus
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Indication repeating apparatus
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Collapsible tube for fighting fire with high expansion foam
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Combination air conditioning and foam plug fire extinguishing system
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Foam plug generator
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Ventilators for inflatable buildings
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Condition responsive system having means responsive to a negative or positive rate of change of a detected signal
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Capacity alarm system with a loop sensor having an inductive radio frequency filter
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Control apparatus
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Hood and duct fire extinguishing system
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US3271833A
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Pressure operated release device
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GB1014937A
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Decomposition of hydrazine
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US3321177A
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Valve for fluid medium under pressure
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