4. Telephonic communications
  5. Emergency or alarm communications
  6. Central office responsive to emergency call or alarm

Jan K. Simpson

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Rolled-formed seat and retainer for a fluid-tight ferrule seal o

Metal deforming – By use of tool acting during relative rotation between tool... – Tool orbiting or rotating about an axis
Patent

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Rolled-formed seat and retainer for a fluid-tight ferrule seal o

Metal deforming – By use of tool acting during relative rotation between tool... – With cutting of work or product
Patent

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Supplemental data transmission system for a parallel, direct com

Telephonic communications – Emergency or alarm communications – Central office responsive to emergency call or alarm
Patent

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