4. Communications, electrical: acoustic wave systems and devices
  5. Echo systems
  6. Presence or movement only detection

Hannu Kulju

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Method for selecting the mode of operation of an object counting

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection
Patent

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Method of and apparatus for counting objects

Communications: directive radio wave systems and devices (e.g. – Return signal controls external device
Patent

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Procedure and apparatus for detecting objects moving at varying

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Profile ID: LFUS-PAI-P-357420

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