4. Communications: electrical
  5. Continuously variable indicating
  6. Condition responsive

Albert W. Gershman

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Electronic marker for metallic valve box covers

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

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Method and apparatus for tracking the flow of liquids in a gas p

Measuring and testing – Inspecting
Patent

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Remote cathodic protection monitoring system

Communications: electrical – Continuously variable indicating – Condition responsive
Patent

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Profile ID: LFUS-PAI-P-1028757

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