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

Robert B. Donnally

E - Fixed Constructions – 21 – B

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Folding gin pole for high floor mast

E - Fixed Constructions – 21 – B
Patent

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Oil well derrick substructure with carriage for blowout...

E - Fixed Constructions – 21 – B
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Oil well drilling apparatus

E - Fixed Constructions – 21 – B
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Pipe racker assembly

E - Fixed Constructions – 21 – B
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Power shovel crowd drive assembly

E - Fixed Constructions – 02 – F
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Telescopic drilling derrick apparatus

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-31277

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