4. Chemical apparatus and process disinfecting, deodorizing, preser
  5. Control element responsive to a sensed operating condition
  6. Control element is fluid pressure sensitive

Ralph P. Crist

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Chemical canister

Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition – Control element is fluid pressure sensitive
Patent

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Expendable bathythermograph for use under ice

Measuring and testing – Meteorology – Electric disturbance
Patent

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Noise making device

Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent

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Towed noisemaker

Communications – electrical: acoustic wave systems and devices – Sonar counter-measures
Patent

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Profile ID: LFUS-PAI-P-854764

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