4. Buoys, rafts, and aquatic devices
  5. Water rescue or life protecting apparatus
  6. Personal flotation device

William C. Powers

Inventor

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Emergency flotation device

Buoys – rafts – and aquatic devices – Water rescue or life protecting apparatus – Personal flotation device
Patent

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Emergency flotation device

Buoys – rafts – and aquatic devices – Water rescue or life protecting apparatus – Personal flotation device
Patent

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Field emission display having a cathodoluminescent anode

Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Reexamination Certificate

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Profile ID: LFUS-PAI-P-165744

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