4. Computer graphics processing and selective visual display system
  5. Plural physical display element control system
  6. Segmented display elements

Duane E. Cummings

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Dash mounted sonar depth indicator

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Food preparation type
Patent

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Flasher-type fish finder with zoom feature

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Reexamination Certificate

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Gimbal mounted sonar depth indicator

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Food preparation type
Patent

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Light pipe display for sonar

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Reexamination Certificate

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Method for distinguishing return echoes from noise

Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control
Reexamination Certificate

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Profile ID: LFUS-PAI-P-828485

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