4. Chemistry: electrical and wave energy
  5. Apparatus
  6. Electrolytic

Alexander Chak

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Device for silverizing drinking water

Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent

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Exercising device

Exercise devices – User manipulated force resisting apparatus – component... – Utilizing resilient force resistance
Reexamination Certificate

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Personal flying apparatus

Aeronautics and astronautics – Safety lowering devices – Parachutes
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1648515

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