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Integrating meter

Signals and indicators – Vehicle – Speedometer
Patent

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Intense noise generator

Signals and indicators – Horns – whistles and compressional wave generators
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Interlocking stacking plastic barricades

Signals and indicators – Street traffic – Portable
Patent

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Internal fault indicator for a transformer

Signals and indicators – Indicators – Fluid flow
Patent

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Internal temperature measuring device

Signals and indicators – Indicators – Temperature responsive or compensating means
Reexamination Certificate

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Interruptible time-temperature indicator

Signals and indicators – Alarms – Fluid flow
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Intruder alarm

Signals and indicators – Alarms – Burglar
Patent

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Inventory board

Signals and indicators – Indicators – Operator movable
Patent

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Inventory control board

Signals and indicators – Horns – whistles and compressional wave generators – Manually actuated air compressor
Patent

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Inventory indicating means for refrigeration apparatus

Signals and indicators – Indicators – Operator movable
Patent

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Inversion indicator

Signals and indicators – Indicators – Chemically activated type
Patent

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Ion concentration testing apparatus

Signals and indicators – Indicators – Chemically activated type
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Iron core for the magnetic induction of a visual information dis

Signals and indicators – Indicators – Magnetically actuated
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Irreversible humidity indicator cards

Signals and indicators – Indicators – Chemically activated type
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Irreversible humidity indicator cards

Signals and indicators – Indicators – Chemically activated type
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Irreversible threshold-temperature indicator

Signals and indicators – Indicators – Temperature responsive or compensating means
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Irreversible warmup indicator

Signals and indicators – Alarms – Fluid flow
Patent

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Irrigation signalling device

Signals and indicators – Alarms – Fluid flow
Patent

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