4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer

Joseph F. Bader

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Dual diverging manifold loudspeaker system

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer
Patent

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Mounting foot for light bar

Illumination – Supported by vehicle structure – Automobile
Reexamination Certificate

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Omindirectional modular siren

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer
Patent

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Programmable emergency signalling device and system

Communications: electrical – Systems – Periodic or flashing
Patent

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Programmable emergency signalling device and system

Communications: electrical – Systems – Periodic or flashing
Patent

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Profile ID: LFUS-PAI-P-278098

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