4. Communications: electrical
  5. Selective
  6. Having indication or alarm

Donald O. West

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Automatic sensing device for off-horizontal and off-vertical det

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

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Trim tab position monitor and display device

Communications: electrical – Selective – Having indication or alarm
Patent

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Profile ID: LFUS-PAI-P-1009273

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