Leningradskoe Nauchno-Proizvodstvennoe Obiedinenie Zemleroinogo Mashinostroenia

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Trenching machine for cutting preferably frozen ground
- Patent number 4,432,584
- Issue date Feb 21, 1984
- Leningradskoe Nauchno-Proizvodstvennoe Obiedinenie Zemleroinogo Mashinostroenia
- Stepan K. Vartanov
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

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