4. Electrical transmission or interconnection systems
  5. Switching systems
  6. Condition responsive

Paul N. Richards

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Compiled set transfer device

Photocopying – Contact printing – Light boxes
Patent

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Distributed temperature sensor

Thermal measuring and testing – Temperature measurement – By a vibratory effect
Patent

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Fail-safe system

Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent

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Fluid level sensing systems

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Fluid level sensing systems

Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Patent

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Profile ID: LFUS-PAI-P-212324

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