4. Data processing: database and file management or data structures
  5. Database and file access
  6. Preparing data for information retrieval

Yi-Chieh Chang

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Portable electronic device

Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate

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Proprietary portable audio player system for protecting...

Information security – Prevention of unauthorized use of data including prevention...
Reexamination Certificate

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Universal information code format for two dimensional bar...

Data processing: database and file management or data structures – Database and file access – Preparing data for information retrieval
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2158255

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