4. Acoustics
  5. Diaphragm and enclosure
  6. With horn

Norman L. Chalfin

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360 Degree radial reflex orthospectral horn for high-frequency l

Acoustics – Diaphragm and enclosure – With horn
Patent

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Air purification system using cryogenic techniques

Refrigeration – Processes – Circulating external gas
Patent

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Binaural doppler collision alert system for general aviation air

Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Patent

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Book pack for scouts

Travel goods and personal belongings – Carrier or storage container – Attachable to body – apparel – or belt
Patent

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Integrated universal tool

Compound tools – Plier type – With cutter
Patent

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Profile ID: LFUS-PAI-P-731637

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