4. Radiant energy
  5. Ionic separation or analysis
  6. Static field-type ion path-bending selecting means

H. L. Hanson

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Autofocus system

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Automatic focus system with loss of correlation inhibit

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Control circuit for photographic apparatus

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Digital auto focus

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Distance determining and automatic focusing apparatus with false

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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