4. Measuring, testing, or signalling instruments
  5. Security or signal instrument or casing
  6. Alarm or control thereof

Chung K. Chan

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Automatic safety entry light

Lighting – Light fixture – Hand-held – body-attached or lantern type
Patent

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Joule Thomson refrigerator

Refrigeration – Refrigeration producer
Patent

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Multistage pulse tube cooler

Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...
Patent

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Portable cabinet door alarm

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent

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Self-actuating heat switches for redundant refrigeration systems

Heat exchange – Heating and cooling – Heating and cooling of the same material
Patent

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Profile ID: LFUS-PAI-P-714252

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