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Priority to JP1985046430UpriorityCriticalpatent/JPH0231452Y2/ja
Publication of JPS61163211UpublicationCriticalpatent/JPS61163211U/ja
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Publication of JPH0231452Y2publicationCriticalpatent/JPH0231452Y2/ja
Ground covering element having raised portions at the useful side which are separated from one another by dummy gaps, a ground covering element group of such ground covering elements, and a method of producing such ground covering elements