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

Douglas F. Winberg

E - Fixed Constructions – 21 – B

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Compartmented bulkheads for tunneling shields

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Continuous advancement of tunneling shields

E - Fixed Constructions – 02 – F
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Cutter assemblies for rock drilling

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Fix cutter assemblies and supports therefor

E - Fixed Constructions – 21 – B
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Fix cutter assemblies and supports therefor

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Patent

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Profile ID: LFCA-PAI-P-50445

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