4. Excavating
  5. Snow or ice removing or grooming by portable device
  6. Railway clearer

Warren W. Grist

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Earth working apparatus

Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent

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Tie rod assembly for concrete form panels

Static molds – Mold element – In situ construction engineering or building type
Patent

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Trimmer type road construction apparatus with pivotally connecte

Excavating – Railway graders – Side former
Patent

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Waler corner lock assembly

Static molds – Miscellaneous mold adjuncts – In situ construction engineering or building type
Patent

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Profile ID: LFUS-PAI-P-544134

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