exist only as provided in the laws of sovereign states, and can be enforced only to the. extent that application has been made and a patent granted covering the territory of an. individual state. Patent rights are limited in duration, with the global standard being 20. years from the date of application. The new product, article of manufacture or process. described in the patent application must be something that has never been previously.
Typically, curtains are made of lighter weight fabric and give your windows a more homey look. There are three basic styles of curtains: panels, cafÃ© and tier; and you'll find variations on each style.
Steps to install Rods. Whichever type or style of curtains and hardware you choose, installation generally follows the steps shown here. Brackets are mounted to the wall on each side of the window casing. The brackets (along with a center support) hold up a curtain rod, which in turn supports the curtains. For curtains that come with a valance, a valance rod completes the installation. Be sure to follow all the manufacturerâs instructions.