4. Boring or penetrating the earth
  5. With signaling, indicating, testing or measuring
  6. Tool position direction or inclination measuring or...

William J. Hutzel

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Heat pump system with multi-stage compression

Refrigeration – Reversible – i.e. – heat pump
Reexamination Certificate

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Heat pump system with multi-stage compression

Refrigeration – Refrigeration producer – Compressor-condenser-evaporator circuit
Reexamination Certificate

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Method and apparatus for determining path orientation of a passa

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent

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Profile ID: LFUS-PAI-P-562019

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