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Ingenieursbureau voor Systemen en Octrooien "Spanstaal" B. V.
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Nieuwegein & Amstelveen, NL
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Suction dredger and method of loading the same
Patent number
4,245,932
Issue date
Jan 20, 1981
Ingenieursbureau voor Systemen en Octrooien "Spanstaal" B. V.
Gerrit H. van Zeggelaar
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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