4. Communications: electrical
  5. Condition responsive indicating system
  6. Specific condition

James Johannsen

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Apparatus for providing a regenerant solution to a regenerable l

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Apparatus to provide a remote display of the operating condition

Telephonic communications – Telephone line or system combined with diverse electrical... – Remote indication over telephone line
Patent

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System for monitoring the status of a water softener

Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1672730

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