4. Electric lamp and discharge devices: systems
  5. Cathode ray tube circuits
  6. Combined cathode ray tube and circuit element structure

George Chan

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Periodic permanent magnet focused TWT

Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent

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Phenyl urea and phenyl thiourea derivatives as HFGAN72...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate

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Sequential separation of metals by controlled pH precipitation

Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent

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