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Priority to JP2696074ApriorityCriticalpatent/JPS5637368B2/ja
Publication of JPS50119410ApublicationCriticalpatent/JPS50119410A/ja
Publication of JPS5637368B2publicationCriticalpatent/JPS5637368B2/ja
Foerfarande och anordning foer kapning av plastlamelldike i et vid vertikaldikning anvaendbart monteringsfaerdigt verti kadike (prefabr drain) nedanfoer jordytan