4. Telephonic communications
  5. Diagnostic testing, malfunction indication, or electrical...
  6. Of centralized switching system

Donald F. Parsons

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Automated storage and retrieval system

Boots – shoes – and leggings
Patent

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Circuit testing of telephone grids or the like

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of centralized switching system
Patent

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Circuit testing of telephone grids or the like

Patent

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Emergency alert system

Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent

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Switch testing

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of centralized switching system
Patent

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Profile ID: LFUS-PAI-P-843087

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