4. Registers
  5. Platform operated
  6. Platform actuated traffic counters

John R. Durbin

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Fiber optic swivel coupler and method of use therefor

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

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Flow line counter incorporating programmed reversal circuitry

Registers – Platform operated – Platform actuated traffic counters
Patent

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Multi-level illumination control system for automotive signallin

Communications: electrical – Land vehicle alarms or indicators – External signal light system
Patent

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Profile ID: LFUS-PAI-P-866333

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