4. Optical: systems and elements
  5. Lens
  6. With field curvature shaping

Hitoshi Matsuzawa

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active

Active noise control method and receiver device

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation
Reexamination Certificate

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Echo canceler

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Exposure apparatus

Optical: systems and elements – Lens – Multiple component lenses
Patent

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Exposure apparatus

Optical: systems and elements – Lens – With field curvature shaping
Patent

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Exposure apparatus

Optical: systems and elements – Lens – With field curvature shaping
Reissue Patent

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Profile ID: LFUS-PAI-P-915938

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