1
Darko Pervan: Mechanical locking system for floating floor. Valinge Aluminium, Buchanan Ingersoll PC, May 30, 2006: US07051486 (141 worldwide citation)

Floorboards with a mechanical locking system having a separately machined strip which is mechanically joined with the floorboard.


2
Darko Pervan: Mechanical locking system for floating floor. Burns Doane Swecker & Mathis, January 29, 2004: US20040016196-A1

Floorboards with a mechanical locking system having a separately machined strip which is mechanically joined with the floorboard.



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