4. Measuring and testing
  5. Borehole or drilling
  6. Downhole test

Victor Chang

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Method and apparatus for automatically isolating minimal...

Data processing: software development – installation – and managem – Software program development tool – Testing or debugging
Reexamination Certificate

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Method and apparatus for determining the percentage water conden

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent

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Piezoresistive material, its preparation and use

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent

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Rotary vane type I.C. engine with built-in scavenging air blower

Internal-combustion engines – Rotary – With combusted gas treatment or handling means
Patent

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Scheme for device and user authentication with key...

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate

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Profile ID: LFUS-PAI-P-289863

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