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Improvements in fire extinguishers
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Improvements in fire extinguishers
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Improvements in and relating to methods of and means for producing a fire-fighting solution
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Fire alarm systems
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Calculator respecting water streams used for fire fighting or other purposes
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Calculator respecting water streams used for fire fighting or other purposes
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Improvements in couplings for hose and the like
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Improvements in back pressure valves for the pumps of fire engines
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Improvements in fire extinguishers
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