| 摘要 |
<p>The stone is specially shaped so that it can be moved over the body in a quick and controlled manner. A lava stone used for massage purposes is specially shaped so that it can be moved over the body in a quick and controlled manner. An independent claim is also included for a method for producing the stone by drilling cylinders from a block of porous lava stone, sawing the cylinders to size, polishing them to the desired smoothness and providing them with oil.</p> |
