with tongues or grooves comprising elements which are not manufactured in one piece with the sheets, plates or panels but which are permanently fixedly connected to the sheets, plates or panels, e.g. at the factory

Full Title

Joining sheets or plates or panels > Other details of tongues or grooves > with tongues or grooves comprising elements which are not manufactured in one piece with the sheets, plates or panels but which are permanently fixedly connected to the sheets, plates or panels, e.g. at the factory

Child Classifications

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• E04F 2201/045 wherein the elements are made of wood
• E04F 2201/046 wherein the elements are made of metal
• E04F 2201/047 wherein the elements are made of stone or stone like material, e.g. ceramics, concrete; of glass
• E04F 2201/048 wherein the elements are made of fibres or chips, e.g. bonded with synthetic resins
• E04F 2201/049 wherein the elements are made of organic plastics with or without reinforcements or filling materials