4. Electricity: measuring and testing
  5. Of geophysical surface or subsurface in situ
  6. With radiant energy or nonconductive-type transmitter

David L. Baldridge

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Method and apparatus for measuring the thickness of a layer of g

Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Patent

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Method for controlling the thickness of a layer of material in a

Mining or in situ disintegration of hard material – Automatic control; signaling or indicating – Ore/rock interface determination during cutting
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Method for remote control of a coal shearer

Mining or in situ disintegration of hard material – Automatic control; signaling or indicating – Of hard material disintegrating machine
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Profile ID: LFUS-PAI-P-1193314

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