The present invention is directed to a tool for cutting sandwich type plaster boards such as gypsum plaster boards. It is an object of the present invention to provide a tool which allows the exact cutting of those boards in a time saving manner. According to the present invention this object is performed...http://www.google.es/patents/US6298561?utm_source=gb-gplus-sharePatente US6298561 - Tool for cutting sandwich type plaster boards
