4. Acoustics
  5. Plural diaphragm sound sources
  6. With sound-asborbing means

Benjamin J. Goldfarb

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Aerodynamic bass-reflex enclosure

Acoustics – Plural diaphragm sound sources – With sound-asborbing means
Patent

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Angulated retaining wall

Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent

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Method and apparatus for passive airborne collision avoidance an

Boots – shoes – and leggings
Patent

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Single diode upper sideband terminated parametric amplifier

Amplifiers – Parametric amplifiers – Semiconductor type
Patent

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Profile ID: LFUS-PAI-P-80202

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