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.
The type of curtainrod a person chooses depends on the type of curtains he or she is hanging. People can hang tension rods without using any hardware or tools, but those rods can only hold a lightweight curtain, such as a set of cafe curtains or a valance. Rods that firmly attach to the wall can support more weight.