4. E - Fixed Constructions
  5. 21
  6. B

Joseph L. Pekarek

E - Fixed Constructions – 21 – B

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Apparatus for cutting a notch in a subsurface formation

E - Fixed Constructions – 21 – B
Patent

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Expansible cutter for severing well casing and notching the...

E - Fixed Constructions – 21 – B
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Hydraulic drilling bit and nozzle

E - Fixed Constructions – 21 – B
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Hydraulic jet drilling method using ferrous abrasives

E - Fixed Constructions – 21 – B
Patent

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Method and apparatus for hydraulic jet drilling

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-47905

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