4. Communications: electrical
  5. Traffic control indicator
  6. Indication of time remaining before change of phase

Yefim Berezovsky

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Attachment to traffic light apparatus for visual indication...

Communications: electrical – Traffic control indicator – Indication of time remaining before change of phase
Reexamination Certificate

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Attachment to traffic light apparatus for visual indication...

Communications: electrical – Traffic control indicator – Indication of time remaining before change of phase
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2103007

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