4. Optics: motion pictures
  5. With sound accompaniment
  6. Sound allocation

Mark E. Engebretson

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Arbitrary coverage angle sound integrator

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate

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Arbitrary coverage angle sound integrator

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate

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Curved line array loudspeaker

Electrical audio signal processing systems and devices – Having non-electrical feature – And loudspeaker
Reexamination Certificate

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Method and system of controlling sound and effects devices by a

Optics: motion pictures – With sound accompaniment – Sound allocation
Patent

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Spiral line array loudspeaker

Electrical audio signal processing systems and devices – Having non-electrical feature – And loudspeaker
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1589990

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