4. Measuring and testing
  5. Blower, pump, and hydraulic equipment

Factory Mutual Research Corporation

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Discharge head having dual function plug retaining member

Fire extinguishers – Sprinkler heads – Collapsible strut
Patent

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Dual overlapping fire protection systems and valve

Fluid handling – Self-proportioning or correlating systems – Flow rate responsive
Patent

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Fire identification and discrimination method and apparatus

Radiant energy – Invisible radiant energy responsive electric signalling – Including a radiant energy responsive gas discharge device
Patent

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Heat flux measurement pipe and method for determining...

Measuring and testing – Volume or rate of flow
Reexamination Certificate

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Liquid level control system

Fluid handling – Liquid level responsive or maintaining systems – By weight of accumulated fluid
Patent

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