4. Measuring and testing
  5. Specific gravity or density of liquid or solid
  6. Float operated indicator

Tommy Chi-Kin Wong

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Bottle cap

Design Patent

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Bottle cap

Receptacles – Closures – Closure guided in reciprocating movement
Reexamination Certificate

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Hydrometer

Measuring and testing – Specific gravity or density of liquid or solid – Float operated indicator
Patent

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Self-leveling hydrometer

Measuring and testing – Specific gravity or density of liquid or solid – Float operated indicator
Reexamination Certificate

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Turbine-boosted photocatalysis fluid processor

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – With means applying electromagnetic wave energy or...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1638767

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